JPH07125549A - Maintenance machine - Google Patents

Abstract

PURPOSE:Tb set the peripheral part of an engine to a lower position and to form it contact in size, making the forward sight of an operator expandable, as well as to secure the capacity of a fuel tank as improving stability in lowering the centroidal position of a machine body. CONSTITUTION:An engine 2 is mounted on the front of a machine body so as to make the rear tilt upwards to the front, while a fuel tank 7 is installed in a space part A lying between the rear of the engine 2 and a transmission case 3, and further, a rear upper part of the fuel tank is extended as far as another space part B to be formed in an interval between a handle mount 4 and the transmission case 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a management machine equipped with an engine on a machine body and used for agricultural work such as tilling, soil filling, ridge formation, and trench digging.

[0002]

2. Description of the Related Art Conventionally, this kind of management machine is, for example, the actual Kaisho 5
As described in JP-A-8-157721, an engine is mounted on the front upper part of the airframe, and a mission case for transmitting the rotational power of the engine to traveling wheels and a rotary device is provided on the rear side of the engine in the airframe. The handle support frame is mounted on the upper side of the mission case via the handle mount, while the fuel tank is disposed at the upper position of the engine.

[0003]

However, in the management machine as described above, the vehicle height becomes high because the fuel tank is arranged at a high position above the engine, and therefore the vehicle height is increased while gripping the handle in the field. When performing various operations, the fuel tank narrows the operator's forward field of view, and for example, when performing cultivating work with a rotary device, the fuel tank blocks the forward field of view immediately before cultivating work, and the operator immediately before cultivating. It was difficult to confirm the field conditions in. Further, as described above, if the fuel tank is arranged on the upper side of the engine, the center of gravity of the machine body is located at a high position, which is unstable, difficult to handle, and easily tired.

According to the present invention, by devising the mounting positions of the engine and the fuel tank mounted on the front upper part of the fuselage, the peripheral portion of the engine is put in a low position and compact, and various operations can be performed while gripping the handle. An object of the present invention is to provide a management machine capable of enlarging the operator's forward field of view when performing the operation, lowering the position of the center of gravity of the machine body to improve stability, and ensuring the capacity of the fuel tank.

[0005]

In order to achieve the above-mentioned object, the present invention mounts an engine 2 on the front part of a body 1 and a mission case 3 on the rear part thereof, and on the upper part of the mission case 3, In a management machine provided with a handle support frame 6 via a handle mount 4, an engine 2 is mounted so that its rear part is tilted upward with respect to its front part, and the rear part of the engine 2 and a mission case 3 are mounted. A fuel tank 7 is disposed in a space A between the fuel tank 7 and a rear upper portion of the fuel tank 7 is extended to a space B formed between the handle mount 4 and the mission case 3. It was done.

[0006]

With the above-described structure, the engine 2 is mounted so that the rear portion inclines upward with respect to the front portion, and the space A between the rear portion of the engine 2 and the mission case 3 is mounted.
Since the fuel tank 7 is effectively and lowly assembled by using the operator, the operator can carry out various operations while gripping the handle by putting the peripheral portion of the engine 2 in a low position and compactly. It is possible to expand the front field of view and lower the center of gravity of the machine body 1 to stabilize the overall balance.

When disposing the fuel tank 7 in the space A between the engine 2 and the mission case 3, the upper rear part of the fuel tank 7 is formed between the handle mount 4 and the mission case 3. Since it is extended to the space B, the fuel tank space is extended to the inside of the space B while the peripheral portion of the engine 2 is arranged low and compact as described above, and the capacity of the fuel tank is increased. It can be effectively secured.

[0008]

FIG. 2 shows the overall structure of a management machine according to the present invention. The management machine is equipped with an engine 2 equipped with a cylinder head 21, a muffler 22 and the like at the upper front part of the machine body 1 and 1, a mission case 3 is connected to the rear side of the mission case 3 to support mainly one traveling wheel 9 on the lower front side of the mission case 3 and a rotary device 10 on the lower rear side as an example of various working devices. A handle support frame 6 having a handle 5 is attached to the upper side of the case 3 via a handle attachment base 4 having an open U-shaped cross section and extending rearward and upward. Further, the traveling wheels 9 and the rotary device 10 are interlocked with the engine 2 via a transmission mechanism installed in the transmission case 11 and the transmission case 3.

Then, as shown in FIG. 1, the engine 2 is mounted on the machine body 1 so that its rear part is inclined toward the front side of the machine body, that is, the cylinder head 21 of the engine 2 is a handle. The entire engine 2 is mounted in a rearwardly tilted posture so as to be oriented in the extension line direction of the support frame 6, and is formed between the rear side of the engine 2 and the front side of the mission case 3. The fuel tank 7 is disposed in the space A defined by the above, and the upper rear portion of the fuel tank 7 is extended to the space B formed between the handle mount 4 and the mission case 3.

As shown in FIGS. 1 and 3, the fuel tank 7 has an inverted V-shape so that the side view of the tank body 70 matches the shape of the space.
The upper central portion of the rear surface of the tank is bulged backward to form a bulged portion 71 that can be inserted into the space B formed between the handle mount 4 and the mission case 3, while the upper portion of the tank body 70 is A fuel supply port 73 is provided through a neck portion 72, a cap 74 is attached to the supply port 73 so as to be openable and closable, and a fuel hose connection port (not shown) communicating with the engine 2 is provided on the lower side of the tank body 70. And a pair of pins 75, 75 projecting downward are provided at the bottom of the tank body 70 in the front-rear direction. The fuel tank 7 is formed by blow molding, and the pins 75, 75 are also integrally formed during the blow molding.

On the other hand, on the inner surface of the upper wall of the handle mount 4,
The support 8 having a support 81 for supporting the neck 72 of the fuel tank 7 is fixed so that the support 81 projects forward, and the neck 72 of the fuel tank 7 is fixed to the support 81 of the support 8. It is inserted and supported. The support portion 81 has a through hole 81 a through which the neck portion 72 of the fuel tank 7 can be inserted into the support body 8.
And an elastic support ring 81b such as rubber is fitted and fixed around the through hole 81a.
By fitting the neck portion 72 of the fuel tank 7 into 1b,
The neck portion 72 is configured to be fixedly held on the support body 8 by utilizing the elastic force of the support ring 81b.

In addition, as shown in FIG.
Engagement portions 12, 12 with which pins 75, 75 provided at the bottom of the fuel tank 7 can engage are formed. This engaging portion 12
Is a through hole 12 through which the pins 75 can be inserted into the machine body 1.
a and 12a are formed and the through holes 12a and 12a are formed.
An elastic support ring 12b, 12b made of rubber or the like is fitted around the periphery of the fuel tank 7. A pin 75 is elastically inserted and locked in the support ring 12b to immovably support the bottom side of the fuel tank 7. It is configured to do.

In FIG. 2, 13 is a bonnet and 1
Reference numeral 4 is a cover of the fuel tank 7.

Next, the manner of mounting the fuel tank 7 in the space A between the rear of the engine 2 and the mission case 3 will be described.

Before fixing the handle mount 4 to the upper part of the mission case 3, first, the fuel tank 7 is formed into a space A formed between the rear side of the engine 2 and the front side of the mission case 3. And the pins 75, 75 provided on the bottom of the fuel tank 7 are inserted into and engaged with the engaging portions 12, 12 of the machine body 1. Next, from the tank body 70 to the cap 74
The support 81 of the support 8 is fitted to the neck 72 of the fuel tank 7 with the fuel tank 7 held by the support 8 while the bulging portion 71 of the fuel tank 7 is connected to the handle mounting base 4. The handle mounting base 4 is inserted into the space B formed between the transmission case 3 and the transmission case 3, and in this state, the handle mounting base 4 is fixed to the mounting position above the transmission case 3 with mounting bolts 15. As a result, at the same time when the handle mount 4 is attached to the mission case 3, the fuel tank 7 is inserted through the support body 5 fixed to the handle mount 4 with the bulging portion 71 of the fuel tank 7 entering the space B. Can be installed easily, stably, and reliably.

As described above, the rear tilt side of the engine 2 is higher than the front side, that is, the rear tilt position of the cylinder head 21 of the engine 2 is oriented toward the handle support frame 6 side. Since the engine 2 is mounted on the fuselage 1 and the space A between the rear of the engine 2 and the mission case 3 is utilized to assemble the fuel tank 7 effectively and in a low bulk. By the mounting angle of the engine 2 and the disposition position of the fuel tank 7, it is possible to expand the operator's front view when performing various operations while gripping the handle 5, and the operator can immediately expand the field. The situation can be easily confirmed, and the center of gravity of the machine body 1 can be lowered to stabilize the overall balance. Moreover, by making the engine 2 in a rearward tilted posture such that the cylinder head 21 thereof is directed toward the handle support frame 6 side, the vibration direction of the engine 2 is changed from the conventional vertical direction to the extension direction of the handle support frame 6. The handle 5 can be changed, so that the vibration of the handle 5 due to the driving of the engine 2 can be suppressed, and the work of gripping the handle 5 can be favorably performed.

Moreover, not only is the fuel tank 7 disposed in the space A between the engine 2 and the transmission case 3, but the bulging portion 71 formed at the upper rear portion of the fuel tank 7 is used as the handle mounting base 4. Since it is inserted in the space B formed between the transmission case 3 and the transmission case 3, the fuel tank space is extended to the inside of the space B while the peripheral portion of the engine 2 is arranged in a low position and compact as described above. Thus, the capacity of the fuel tank 7 can be effectively secured.

[0018]

As described above, according to the present invention,
The engine 2 is mounted so that the rear part inclines upward with respect to the front part, and the space A between the rear part of the engine 2 and the mission case 3 is utilized to effectively and efficiently drive the fuel tank 7. Since it is designed to be assembled in a low volume, the peripheral portion of the engine 2 can be arranged in a low position and compactly to expand the operator's front view when performing various operations while gripping the handle, and at the same time, the machine body The center of gravity of 1 can be lowered to stabilize the overall balance,
Moreover, not only is the fuel tank 7 disposed in the space A between the engine 2 and the mission case 3, but the upper rear portion of the fuel tank 7 is located between the handle mount 4 and the mission case 3. Since it extends to the space portion B formed, the fuel tank space is extended to the inside of the space portion B while the peripheral portion of the engine 2 is arranged in a low position and compact as described above. The capacity can be effectively secured.

[Brief description of drawings]

FIG. 1 is an enlarged side view of a main part of a management machine according to the present invention.

FIG. 2 is a side view showing the overall structure of the management machine.

[Fig. 3] Front view of the fuel tank

[Explanation of symbols]

1; Airframe, 2; Engine, 3; Mission case, 4;
Handle mount, 6; handle support frame, 7; fuel tank,

Claims (1)

[Claims] 1. An engine (2) is mounted on a front portion of an airframe (1), a mission case (3) is provided on a rear portion thereof, and a handle mount (4) is provided on an upper portion of the mission case (3). In the management machine provided with the handle support frame (6), the engine (2) is mounted so that the rear part inclines upward with respect to the front part, the rear part of the engine (2) and the mission case (3). ), A fuel tank (7) is disposed in a space (A) between the fuel tank (7) and
An upper part of the rear part of the control machine extends to a space (B) formed between the handle mount (4) and the mission case (3).