JPH06320962A - Pivotal turn work vehicle - Google Patents

Abstract

PURPOSE:To provide constitution for allowing an ultra-small pivotal turn while enabling a gas cylinder of enlarged capacity to be arranged, regardless of the fact that it is required to increase the capacity of the cylinder as a fuel tank when a gas engine is mounted in place of a diesel engine, but such a cylinder cannot be laid at a conventional fuel tank position. CONSTITUTION:Regarding a pivotal turn work vehicle, an engine E to drive the vehicle is laid transversely under a seat 3. Also, a gas engine is used for the engine E, and an air cleaner 17, an exhaust muffler 16 and a three-way catalyst 15 attached to the gas engine E are all arranged under the seat 3. Furthermore, a gas cylinder 1 is provided aft of the gas engine E at a position within a turning radius. Regarding this slewing work vehicle, a cabin housing the seat 3 has large breadth nearly equal to a turning diameter, and the seat 3 is slidable right and left, or rotatable in the wide cabin 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small backhoe, and in particular, if it is possible to travel even in a narrow alley, a revolving frame equipped with a working machine can revolve, and a revolving work capable of ultra-small revolving. Regarding cars

[0002]

2. Description of the Related Art Conventionally, a technology related to a turning work vehicle has been known. For example, it is like the technique described in Japanese Utility Model Application Laid-Open No. 4-1626 or No. 2-56827.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention that, due to the recent rise of environmental problems, it is desired to switch from a diesel engine, which emits a lot of harmful exhaust gas, to a gas engine, which emits less harmful gas. As a result, even in turning work vehicles, it has been desired to install a gas engine instead of a diesel engine. As described above, when a gas engine is mounted instead of the diesel engine, it is necessary to increase the capacity of the gas cylinder as the fuel tank, and the conventional fuel tank cannot store the gas cylinder. Thus, it is possible to arrange a gas cylinder having a large capacity and to provide a structure for enabling a very small turn.

[0004]

The problems to be solved by the present invention are as described above. Next, the means for solving the problems will be described. That is, in a turning work vehicle, an engine for driving the turning work vehicle is horizontally arranged below a seat.

Further, the engine is a gas engine, and an air cleaner, an exhaust muffler, and a three-way catalyst attached to the gas engine are all arranged below the seat.

Further, the gas cylinder is arranged at a position rearward of the gas engine within the turning radius.

Further, in the turning work vehicle, the cabin for accommodating the seat therein is a wide cabin having a width close to the turning diameter, and the seat can be slid or rotated right and left in the wide cabin.

[0008]

[Operation] Next, the operation will be described. That is, the configuration in which the gas engine E, the seat 3, and the wide cabin 5 are arranged on the turning frame 7 can be made compact, and a small turning can be achieved. Further, since an open space can be formed inside the wide cabin 5 or the like, it is possible to secure a space for an exhaust duct for reducing noise, electrical components and the like. Also, the space for living in the wide cabin 5 and the seat 3 could be configured with a margin. Further, the exhaust muffler 16 is arranged below the floor surface so that the exhaust heat of the exhaust muffler 16 is not applied to the operator, and the exhaust pipe from the exhaust muffler 16 can be easily arranged. Further, since the air cleaner 17 is arranged above the floor surface and is below the seat 3, it does not suck in dust and blows suction air,
It is possible to prevent heating below the seat 3. Moreover, since the gas cylinder 1 can be arranged at a position close to the end of the revolving frame 7, the operation of loading and unloading the gas cylinder 1 for replacement can be facilitated. Further, since two seats can be provided, the seat 3 can be slid to the left and right, and can be rotated, it is possible to easily drive when digging a gutter in a narrow place.

[0009]

EXAMPLES Next, examples will be described. 1 is a side view of the backhoe of the present invention with the excavated portion removed, FIG. 2 is a front view of the same, FIG. 3 is a plan view of the same, and FIG. 4 is a plan view of an embodiment in which the wide cabin 5 is covered with glass all around, 5 is a side view of the backhoe of FIG. 4, FIG. 6 is a front view of the backhoe of FIG. 4, FIG. 7 is a rear view of the backhoe of FIG. 4, and FIG. 8 is a plan view of the backhoe in which the gas cylinder mounting table 14 is configured in a drawer shape. , Fig. 9
8 is a side view of the backhoe of FIG. 8, and FIG. 10 is the wide cabin 5
12 is a plan view of the backhoe for rotating the gas cylinder 1 to replace the gas cylinder 1, FIG. 11 is a side view of the backhoe of FIG. 10, and FIG.
10 is a side view of the backhoe shown in FIG. 10 with the wide cabin 5 opened, and FIG. 13 is a rear view of the backhoe shown in FIG.
4 is a plan view of a backhoe in which the gas cylinder chamber lid 9 is tilted rearward so that the gas cylinder 1 can also be moved in and out, FIG.
5 is a side view of the backhoe of FIG. 14, FIG. 16 is a plan view of the backhoe in which the seat 3 is rotatable, FIG. 17 is a side view of the backhoe of FIG. 16, and FIG. Front view of a backhoe that can slide
FIG. 19 is a rear view of the backhoe of FIG.

The backhoe of the embodiment shown in FIGS. 1 to 3 will be described. A crawler type traveling device 6 is provided as a traveling device, and one of the crawler type traveling devices 6 is provided with the soil discharging plate 1
3 is rotatably supported up and down. Further, a swivel base bearing 11 is arranged at the center of the crawler type traveling device 6, and the swivel base bearing 11 supports the swivel frame 7 so that it can swivel 360 degrees. A bracket 10 of the main boom 8 is supported on the front part of the swing frame 7. A bucket arm is pivotally supported at the tip of the main boom 8 mounted on the bracket 10, and a bucket is mounted at the tip of the bucket arm.
It is omitted in FIGS. 1 to 3.

A wide cabin 5 is arranged in the center of the swivel frame 7, and a seat 3 is arranged inside the wide cabin 5. In the embodiment of FIGS. 1 to 3, the left side in the traveling direction is the position of the seat 3 and the operation column during work, and in the case of special work or traveling on the road, the seat 3 is slid left and right. It is possible. A bonnet 4 is arranged at a rear portion of the wide cabin 5, and a gas cylinder 1 and a hydraulic oil tank 2 are arranged in an upright state inside the bonnet 4. As shown in FIG. 3, two gas cylinders 1 which require a large capacity are arranged side by side, and two hydraulic oil tanks 2 are also arranged side by side. A gas cylinder chamber lid 9 for replacing the gas cylinder 1 is pivotally supported at the rear of the bonnet 4. In the embodiment shown in FIGS. 1 to 3, the gas cylinder chamber lid 9 is configured to open vertically.

A swing cylinder 22 is arranged at the right side of the revolving frame 7. And the present invention is
In such a configuration, the gas cylinder 1 and the hydraulic oil tank 2 are arranged, and the engine cannot be arranged at the conventional position in order to enable the super-small turning, so that the seat is provided inside the wide cabin 5. It is placed horizontally at a position below 3. The engine is a gas engine E instead of a diesel engine, and by using the gas engine E, a special gas fuel device needs to be mounted.

Gas fuel equipment includes a three-way catalyst 15 and a mixer. In the present invention, the three-way catalyst 1 is used.
All of the exhaust muffler 16, the air cleaner 17, and the like, including 5, are arranged below the seat 3. The gas engine E is juxtaposed with the swing cylinder 22 arranged on the right side of the revolving frame 7, and the gas engine E is arranged under the left seat 3 so as not to interfere with each other.

Next, an embodiment of the backhoe shown in FIGS. 4 to 7 will be described. In this embodiment, the wide cabin 5 is made of curved glass. The gas cylinder 1 is arranged inside the glass-covered wide cabin 5 at the rear position of the seat 3, and the gas cylinder 1 is moved up and down by a hydraulic cylinder as shown in FIG. With this configuration, the gas cylinder 1 can be easily lifted and unloaded. Further, as shown in FIG. 6, two permanent seats 3 are arranged side by side inside the wide cabin 5.

Next, description will be made with reference to FIGS. In this embodiment, when the gas cylinder chamber lid 9 is rotated in the vertical direction, the gas cylinder mounting table 14 on which the gas cylinder 1 is mounted is
It is possible to pull out to the front side. As described above, the gas cylinder mounting table 14 can be slid out so that the operator can easily replace the gas cylinder 1.

Next, a description will be given with reference to FIGS. In the case of this embodiment, the portion of the gas cylinder 1 can be taken out by tilting the wide cabin 5 forward. The other configurations are the same. 14 and 15, the gas cylinder 1 is fixed to the gas cylinder chamber lid 9, and the gas cylinder chamber lid 9 can be opened and closed vertically. With this configuration, when the gas cylinder chamber lid 9 is opened, the gas cylinder 1 comes out following it, so that the gas cylinder 1 can be easily replaced.

In the embodiments shown in FIGS. 16 to 17, a backhoe in which the seat 3 is rotatable is described. In the case of this embodiment, the seat 3 is arranged at the center of the wide cabin 5, and the seat 3 is rotatable 360 degrees to the left and right. Further, in the embodiment shown in FIGS. 18 and 19, the seat 3 arranged in the center and the steering column are slidable left and right.

[0018]

Since the present invention is constructed as described above, it has the following effects. That is, as in claim 1,
In the revolving work vehicle, the engine for driving the revolving work vehicle is horizontally arranged below the seat. Therefore, the configuration in which the gas engine E, the seat 3, and the wide cabin 5 are arranged on the revolving frame 7 is compact. It became possible to make a small turn. Further, since an open space can be formed inside the wide cabin 5 or the like, it is possible to secure a space for an exhaust duct for reducing noise, electrical components and the like. In addition, the living space for the wide cabin 5 and the seat 3 could be configured with a margin.

Since the engine is a gas engine and the air cleaner, the exhaust muffler and the three-way catalyst attached to the gas engine are arranged below the seat, the exhaust muffler 16 is arranged below the floor surface. Then, the exhaust heat of the exhaust muffler 16 is not applied to the operator,
Further, the arrangement of the exhaust pipe coming out of the exhaust muffler 16 can be easily performed. Further, since the air cleaner 17 is arranged above the floor surface and is below the seat 3, it is possible to prevent heating of the space below the seat 3 by not sucking dust and by blowing suction air.

According to the third aspect of the present invention, since the gas cylinder is arranged at a position rearward of the gas engine within the turning radius, the gas cylinder 1 can be arranged near the end of the turning frame 7, so that the gas cylinder for replacement can be replaced. The operation of loading and unloading 1 could be facilitated.

According to a fourth aspect of the present invention, in the revolving work vehicle, since the cabin for accommodating the seat is a wide cabin having a width close to the revolving diameter, and the seat can be slid or rotated right and left in the wide cabin. Since two seats can be provided, the seat 3 can be slid to the left and right, and can be rotated, it is possible to easily drive when digging a gutter in a narrow place.

[Brief description of drawings]

FIG. 1 is a side view of a backhoe according to the present invention with an excavated portion removed.

FIG. 2 is a front view of the same.

FIG. 3 is a plan view of the same.

FIG. 4 is a plan view of an embodiment in which the wide cabin 5 is covered with glass all around.

5 is a side view of the backhoe of FIG.

FIG. 6 is a front view of the backhoe of FIG.

FIG. 7 is a rear view of the backhoe of FIG.

FIG. 8 is a plan view of a backhoe in which the gas cylinder mounting table 14 is configured in a drawer shape.

9 is a side view of the backhoe of FIG.

[FIG. 10] A gas container 1 is rotated by tilting the wide cabin 5 forward.
FIG.

11 is a side view of the backhoe of FIG.

FIG. 12 is a side view of the backhoe shown in FIG. 10 with the wide cabin 5 open.

13 is a rear view of the backhoe of FIG.

FIG. 14 is a plan view of a backhoe in which the gas cylinder chamber lid 9 is tilted rearward so that the gas cylinder 1 can also be moved in and out.

FIG. 15 is a side view of the backhoe shown in FIG.

FIG. 16 is a plan view of a backhoe having a rotatable seat 3.

FIG. 17 is a side view of the backhoe of FIG.

FIG. 18 is a front view of a backhoe that is slidable to the left and right with the seat position in the working state as the center.

19 is a rear view of the backhoe of FIG.

[Explanation of symbols]

 1 Gas cylinder 2 Hydraulic oil tank 3 Seat 4 Bonnet 5 Wide cabin 6 Crawler type traveling device 15 Three way catalyst 16 Exhaust muffler 17 Air cleaner

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hideo Shimazoe 428 Enami, Okayama City Seirei Industrial Co., Ltd. In-house

Claims (4)

[Claims] 1. A revolving work vehicle, wherein an engine for driving the revolving work vehicle is horizontally disposed below a seat. 2. The turning work vehicle according to claim 1, wherein the engine is a gas engine, and an air cleaner attached to the gas engine, an exhaust muffler, and a three-way catalyst are all arranged below a seat. car. 3. The turning work vehicle according to claim 1, wherein a gas cylinder is arranged at a position rearward of the gas engine within a turning radius. 4. In a swivel work vehicle, a cabin for accommodating a seat therein is a wide cabin having a width close to a swivel diameter, and the seat can be slid or rotated right and left in the wide cabin. Turning work vehicle.