JP2001171562A - Bonnet structure for moving vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure a wide working space for inspection and maintenance when a bonnet cover is opened, so as to enhance workability. SOLUTION: A bonnet cover 2 is composed of an open cover part 2a made of a synthetic resin formed to have a width substantially same to a lateral width of a body frame 3 and to be opened and closed vertically, and a pair of left and right side face cover parts 2b, 2c made of an iron sheet closed facedly toward the inside in a rear area 2'a of the cover part 2a near to a front face of a driver's seat 9, and fixed to detachably onto the body frame 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile vehicle having an engine and a peripheral mechanism mounted in a hood cover, and more particularly to a hood cover having a shape in which a rear area of the cover is narrowed down so as to secure a left and right view in a lower front direction. The present invention relates to a bonnet structure for a mobile vehicle that can secure a wide working space for inspection and maintenance when opened and improve workability.

[0002]

2. Description of the Related Art Conventionally, in a mobile vehicle such as a tractor or a cultivator, an engine and other peripheral mechanisms mounted on an airframe are covered with a hood cover that can be freely opened and closed.
Internal inspection and maintenance work are performed with the bonnet cover open.In recent years, a synthetic resin bonnet cover has been used instead of an iron plate to reduce manufacturing costs and reduce the weight of the bonnet cover itself. It is supposed to be.

[0003] However, the above-described bonnet cover made of a synthetic resin can reduce the weight and reduce the cost as compared with the bonnet cover made of an iron plate. In order to improve the visibility in the left-right direction, an expensive and complicated injection mold is required to integrally mold the bonnet cover with the shape narrowed inward in the rear area of the cover with synthetic resin. Was forced to rise.

Further, in the conventional bonnet cover, regardless of the above-mentioned synthetic resin and steel plate, the entire cover is integrally formed. Therefore, when the bonnet cover is opened at the time of inspection and maintenance work, the lowermost portion of the opened cover is required. Is lower than the other cover parts, so that there is still room for improvement such that the internal space is obstructed and workability is impaired.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in the course of research and development for improving the bonnet structure of a mobile vehicle in view of the above situation, and an object thereof is to provide a hood cover. It is easy to enter into the internal space when the cover is opened, improves the workability of inspection and maintenance work, and is detachable to the openable cover part that can be opened and closed vertically and the body frame side while opening and closing the cover A bonnet for a mobile vehicle that can easily manufacture a bonnet cover with a narrowed rear region without the need for complicated injection molding dies for molding synthetic resin by separating the bonnet cover from the left and right side cover parts to be fixed separately. It seeks to provide structure.

[0006]

In order to solve the problems, a first technical means adopted by the present invention is to operate a bonnet cover which covers an engine mounted on a front portion of a body frame and peripheral mechanisms from above. In order to equip the front of the driver's seat, the bonnet cover has an open cover that is formed to have substantially the same width as the left and right width of the body frame and that can be opened and closed up and down. And a pair of left and right side cover parts which are narrowed down toward each other and are detachably fixed on the body frame. As a second technical means, the open cover part is made of synthetic resin. And the left and right side cover portions are made of iron plate.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described in detail with reference to an embodiment shown in the drawings. 1 to 5, reference numeral 1 denotes a crawler tractor. The crawler tractor 1 includes an engine 4, a radiator 5, an air filter 6, and other piping pipe groups on a body frame 3 in a bonnet cover 2 described later. 6a, and crawler traveling devices 7, 7 on the left and right sides of the body frame 3, respectively, and a console part in which an operation handle 8 and instruments (not shown) are arranged substantially in the center of the body frame 3. A driver's seat 9 including a roof and the like is provided, and an operator A is seated in the driver's seat 9 to perform a traveling operation and a work operation in a field.

Here, the hood cover 2 is provided with an open cover 2a formed approximately the same width as the left and right sides of the body frame 3 and capable of opening and closing up and down, and the open cover 2a close to the front surface of the driver's seat 9. A pair of left and right side cover portions 2b and 2c which are squeezed inwardly inward in the region and are detachably fixed on the body frame 3; the open cover portion 2a is formed of synthetic resin; Left and right side cover 2
b and 2c are formed of an iron plate, and the crawler tractor 1
When the operator A tilts the upper body forward during the traveling, the visibility in the left-right direction in the lower front area from the driver's seat 9 is improved, and the crawler traveling device 7 can easily confirm the state of the foot circumference even while traveling. I can do it.

That is, the open cover portion 2a has the support frames 10 and 10 located in front of the driver's seat 9 as pivot base ends, and the area 2'a thereafter extends downward and forward from the upper surface to the left and right side surfaces. It has a notch shape 11 that extends, and is configured to be vertically openable and closable via a hinge (not shown) and a hydraulic damper 10b.

The left and right side cover portions 2b and 2c are shown in FIG.
As shown in FIG. 5, a plurality of heat dissipation holes 14a, 14a,... Are narrowed inward between the inclined upper surface portion 12 and the lower side surface portion 13.
Are formed integrally with each other, and the outer peripheral edge thereof has a front edge portion 15 having the same shape as the cutout shape 11.
And a rear edge 16 along the support frame 10 and a bottom edge 17 along the upper surface of the body frame 3.

Locking hooks 18 are provided on the back surface of each of the lower side surfaces 13, 13, and pins 19, 19 are provided on the upper surface of the body frame 3. To each side cover part 2b,
The lower half side of 2c is detachably fixed on the body frame 3 and the rear surface of the intermediate surface portion 14 of the left side cover portion 2b is
A leaf spring 20 having a U-shaped cross section is mounted, and the left side cover portion 2b is fixed to the body frame 3 by being removably fixed to a fixing pin (not shown) on the body frame 3 side.

On the other hand, the intermediate surface portion 14 of the right side cover portion 2c
A mounting bracket which is integrally formed with a suction port 21 communicating with the air filter 6 outwardly and is screwed to a fixed bracket (not shown) on the side of the body frame 3 on the back surface of the inclined upper surface portion 12. The right side cover 2c is fixed to the body frame 3 side similarly to the left side cover 2b. Reference numeral 23 denotes a filter material filled in the suction port 21.

Since the present invention is configured as described above,
When the open cover 2a of the bonnet cover 2 is opened during inspection and maintenance work of the crawler tractor 1, as shown in FIG. 6 (a), the open cover 2a has the support frame 10, 10 side as a rotation base end. Opened upward. At this time, the left and right side cover portions 2b of the hood cover 2
2c is fixed on the body frame 3, and the left and right side cover portions 2b, 2c are opened by opening the open cover portion 2a.
Between the front edges 15, 15 and the notch shape 11 on the side of the open cover 2a, the lowermost portion B 'of the hood cover B having a conventional configuration as shown in FIG. Inspection and maintenance work on the engine 4, the air filter 6, the pipe group 6a, and the like disposed in the bonnet cover 2 can be easily performed without the problem that the internal space is obstructed by the surface area.

As shown in FIG. 1, when the muffler C is disposed rearward in the hood cover 2, the left and right sides of the muffler C are covered by the iron-made left and right side cover portions 2b and 2c. Since the cover is covered, the cover can be configured to withstand heat generated in the vicinity of the muffler. Even when the open cover 2a is opened, there is a danger that the operator may accidentally come into contact with the muffler C. It is possible to avoid deformation due to heat in the vicinity of the muffler C, as compared with the configuration of FIG.
In addition to causing no distortion, the front edge 15 and the open cover 2 of the right side cover 2c can be replaced when the filter material 23 of the suction port 21 provided in the right side cover 2c is replaced.
The work can be easily carried out by putting a hand from the open space formed between the cutout shape 11 on the a side.

As shown in FIG. 7, the open cover 2a
If the left and right side cover portions 2b and 2c are removed from the body frame 3 with the parts opened, the front and left and right side surfaces of the body frame 3 are further largely opened, so that inspection and maintenance work is further facilitated. Will be able to do it.

[0016]

In short, according to the present invention, a hood cover for covering the engine and peripheral mechanisms mounted on the front part of the body frame from above is provided in front of the driver's seat. An open cover that can be opened and closed up and down with the same width as the width, and a narrow area facing the inside of the open cover near the front of the driver's seat, facing inward, and attached to and detached from the body frame It consists of a pair of left and right side covers that are freely fixed, and because the open cover is made of synthetic resin and the left and right side covers are made of iron plate, the left and right directions in the lower front area of the operator sitting in the driver's seat Can be greatly improved, and it is possible to easily confirm the state of the surroundings of the front wheels and crawler traveling device mounted on the moving vehicle while traveling. Since the open cover made of synthetic resin and the left and right side cover made of iron plate are separate parts, it is possible to easily manufacture a bonnet cover having a narrowed down part without the need for complicated processing steps, thereby reducing costs. When performing maintenance of the engine and peripheral mechanisms by opening the open cover, the rotating base end of the open cover is largely open upward from the left and right side cover parts. The problem that the internal space is obstructed by the lowermost portion of the opened hood cover is eliminated, and the inspection and maintenance work on the peripheral mechanisms arranged in the hood cover can be easily performed. When the muffler is arranged rearward in the hood cover, the left and right sides of the muffler are covered by side cover portions made of iron plate, so that the cover has resistance to heat generated near the muffler. In addition to being able to be configured, even when the open cover portion is opened, it is possible to avoid the danger that the operator may accidentally come into contact with the muffler, and as compared with a configuration in which the entire bonnet cover is made of synthetic resin. It does not induce deformation or distortion due to heat near the muffler. Etc., which are very useful and novel effects.

[Brief description of the drawings]

FIG. 1A is an overall plan view of a crawler tractor. (B) is an overall side view of the same.

FIG. 2 is a front view of the crawler tractor.

FIG. 3 is an enlarged side view of a main part of a crawler tractor, which is partially omitted.

FIG. 4 is an enlarged plan view of a main part of a crawler tractor, which is partially omitted.

FIG. 5A is a perspective view of a back surface side of a right side cover portion. (B) is a perspective view of the front side of the left side cover part.

FIG. 6A is a main part side view showing a state in which an open cover part of the present invention is opened. (B) is a side view of a main part showing a state in which a hood cover of a conventional configuration is opened.

FIG. 7 is a main part side view showing a state in which an open cover part of the present invention is opened and left and right side surface cover parts are removed.

[Explanation of symbols]

 3 Airframe 4 Engine 5 Radiator 6 Air filter 2 Bonnet cover 9 Driver's seat 2a Open cover 2'a Rear area 2b Left side cover 2c Right side cover

Claims (2)

[Claims] 1. A hood cover for covering an engine and a peripheral mechanism mounted on a front portion of a body frame from above is provided in front of a driver's seat. The hood cover is formed to have substantially the same width as the left and right width of the body frame. And a pair of open / close-openable open cover portions, which are narrowed in an opposing manner inward in the rear area of the open cover portion near the front of the driver's seat, and which are detachably fixed on the body frame. A bonnet structure for a mobile vehicle, comprising left and right side cover portions. 2. The bonnet structure for a mobile vehicle according to claim 1, wherein said open cover portion is made of synthetic resin, and said left and right side cover portions are made of iron plate.