JP3103244B2 - Turning work vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an arrangement of a gas cylinder when an engine of a turning work vehicle such as a backhoe is a gas engine.

[0002]

2. Description of the Related Art In a conventional turning work vehicle, a diesel engine is often mounted as an engine, and a fuel tank for storing fuel such as light oil is disposed.

[0003]

However, the exhaust gas has
The destruction of the atmospheric environment by carbon oxides and nitrogen oxides has become a problem, and it has become necessary to change the prime mover from a diesel engine to a gas engine. The problem at this time is a comparison of the capacity of the fuel tank and the gas cylinder. In the case of a gas cylinder, the capacity of the gas cylinder is required to be about three times to enable continuous operation for the same time. It becomes. For this reason, it is necessary to make the gas cylinder as large as possible.However, if it is too large, it will hinder the operator's view and will not be able to obtain the turning radius of the conventional diesel engine. is there. The present invention is to solve such a problem while mounting a gas engine.

[0004]

The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described. That is, in a turning work vehicle equipped with a gas engine using gas fuel, a gas cylinder for storing gas fuel is arranged horizontally, and is arranged on the opposite side to the living space.

Further, in a turning work vehicle equipped with a gas engine using gas fuel as fuel, a gas cylinder for storing gas fuel is arranged below a hydraulic oil tank for supplying hydraulic oil to a hydraulic device.

In a turning work vehicle equipped with a gas engine using gas fuel, a gas cylinder for storing gas fuel is disposed obliquely at a position between the bonnet and the hydraulic oil tank.

In a turning work vehicle equipped with a gas engine using gas fuel as fuel, a gas cylinder for storing gas fuel is arranged horizontally below a seat.

[0008]

Next, the operation will be described. Since the present invention is configured as described above, the following operations are provided. That is, the gas cylinder 1 could be stored without obstructing the operator's view. In addition, by disposing the gas cylinder 1 in the turning frame 7, a turning radius similar to that of a conventional turning work vehicle could be obtained. The left and right sides of the seat 3 are open because the gas cylinder 1 is placed low inside the revolving frame 7, so that the passenger can get on and off from either side.

Further, while the capacity of the gas cylinder 1 can be increased, the gas cylinder 1 does not protrude above the bonnet 4. Further, since the gas cylinder 1 is stored at the floor position above the revolving frame 7, the seat 3
When getting on and off, you can get on and off in either direction.
Further, the liquefied gas inside the gas cylinder 1 is supplied to the engine E through the siphon pipe, but the liquefied gas inside the gas cylinder 1 could not be used until the end. In the case of the present invention, since the gas cylinder 1 is arranged obliquely, the remaining liquefied gas can be reduced and can be effectively used. Further, the gas cylinder 1 can be easily replaced by using the cylinder chamber lid 15.

Further, the gas cylinder 1 is provided with a filling valve and a liquid discharging valve, and when the operation is completed, the liquid discharging valve needs to be "closed" to ensure safety. By arranging the gas cylinder 1 below, the take-out valve can be opened and closed without getting down from the seat 3, so that the usability is improved.

[0011]

Next, an embodiment will be described. FIG. 1 is a right side view of the turning work vehicle of the present invention, FIG. 2 is a left side view of the same with a bucket arm portion removed, FIG. 3 is a front view of a state in which a working machine is removed from a boom part, and FIG. FIG. 5 is a right side view of the embodiment in which the gas cylinder 1 is disposed obliquely between the hydraulic oil tank 2 and the bonnet 4, and FIG. 6 shows a state in which the gas cylinder 1 is tilted down for replacement. FIG. 7 is a left side view of the embodiment in which the gas cylinder 1 is arranged below the seat 3, FIG. 8 is a front view in a state where the gas cylinder 1 is arranged below the seat 3, and FIG. FIG. 10 is a partial cross-sectional plan view of the gas cylinder 1, and FIG. 11 is a side view of the gas cylinder 1.

1, 2, 3, and 4, a description will be given of a configuration in which the gas cylinder 1 is arranged horizontally and arranged on the side opposite to the living space. On one side of the crawler-type traveling device 6, a discharge plate 13 is projected so as to be vertically rotatable. A swivel bearing 11 is arranged at the center of the crawler type traveling device 6, and the swivel bearing 7 supports the swivel frame 7 so that it can fully swing.

An engine E is mounted on the revolving frame 7, and the engine E is covered with a hood 4. In addition, a cabin 5 as a living space is arranged at the front half of the left half of the revolving frame 7, and the gas cylinder 1 and the hydraulic oil tank 2 are arranged on the right front part of the revolving frame 7 opposite to the cabin 5 in an overlapping state. doing. The swing cylinder 16 for rotating the main boom 8 to the left and right is provided with a swing frame 7 on the side opposite to the seat 3 which is conventionally a living space.
In the present invention, the gas cylinder 1 is disposed at this position,
Are arranged below the seat 3.

In particular, the hydraulic oil tank 2 is configured so as to be higher than the revolving frame 7, but the gas cylinder 1 is placed horizontally at a low position so as to be disposed inside the revolving frame 7. And The hydraulic oil in the hydraulic oil tank 2 includes a main boom 8 at the front, a bucket arm 9,
The bucket 10 is supplied to a hydraulic cylinder for rotating the bucket. In the embodiment of FIGS. 1 to 4, the gas cylinder 1 is mounted on a swivel frame 7 on the opposite side of the cabin 5 which is a living space. , Are arranged horizontally in an overlapping state.

Next, the embodiment shown in FIGS. 5 and 6 will be described. In this embodiment, a canopy 12 is provided in the living space. The canopy 12 is disposed on the left side in the traveling direction, and the gas cylinder 1 disposed diagonally is provided on the opposite right side, between the bonnet 4 and the hydraulic oil tank 2. The hydraulic oil tank 2 is provided at a side position of the canopy 12 which is a living space, and the hood 4 is provided at a position behind the seat 3 and the gas cylinder 1. Inside the hood 4, an engine E arranged horizontally is provided.

The gas cylinder 1 is covered with a cylinder chamber cover 15 in an oblique posture in which the upper part is inclined rearward, and the cylinder chamber cover 15 is opened and also serves as a mounting table for mounting the gas cylinder 1. ing. The gas cylinder 1 can be set up by closing the cylinder chamber lid 15 while rotating it while placed on the cylinder chamber lid 15. When the gas cylinder 1 becomes empty, it can be easily lowered.

Next, an embodiment will be described with reference to FIGS. In the present embodiment, the gas cylinder 1 is placed horizontally below the seat 3 arranged at the canopy 12. The gas cylinder 1 in the horizontal state faces left and right in the traveling direction. 9, 10, and 11 disclose a state in which the gas cylinder 1 is removed. A liquid discharging valve 20 and a filling valve 21 are arranged above the gas cylinder 1, and a liquid discharging siphon pipe 17 is inserted from the liquid discharging valve 20 into the inside. A filling siphon tube 18 is inserted from the filling valve 21.

[0018]

As described above, the present invention has the following advantages. That is, since it is configured as in claim 1, without obstructing the operator's view,
The gas cylinder 1 could be stored. Also,
By arranging the gas cylinder 1 in the turning frame 7, a turning radius similar to that of a conventional turning work vehicle could be obtained. In addition, the left and right sides of the seat 3 have the gas cylinders 1 arranged low inside the revolving frame 7,
It is open and you can get on and off from either side.

The gas cylinder 1 does not protrude above the bonnet 4 while the capacity of the gas cylinder 1 can be increased. In addition, since the gas cylinder 1 is stored at the floor surface position above the revolving frame 7, when getting on and off the seat 3, it is possible to get on and off in either left or right direction.

Conventionally, the liquefied gas inside the gas cylinder 1 is supplied to the engine E through a siphon pipe, but the liquefied gas inside the gas cylinder 1 could not be used until the end. Since the gas cylinder 1 is arranged obliquely, the remaining liquefied gas can be reduced and can be effectively used. In addition, the replacement of the gas cylinder 1 is performed by using the cylinder chamber lid 15,
It's easy.

Since the gas cylinder 1 is provided with a filling valve and a liquid discharging valve, it is necessary to close the liquid discharging valve when the operation is completed to ensure safety. In this case, by disposing the gas cylinder 1 below the seat 3, the take-out valve can be opened and closed without getting down from the seat 3, thereby improving the usability.

[Brief description of the drawings]

FIG. 1 is a right side view of a turning work vehicle according to the present invention.

FIG. 2 is a left side view showing a state where a bucket arm portion is removed.

FIG. 3 is a front view of a state in which a work machine is removed from a boom portion.

FIG. 4 is a plan view of the turning work vehicle.

FIG. 5 shows a gas cylinder 1 with a hydraulic oil tank 2 and a bonnet 4
The right side view of the example arranged diagonally between them.

FIG. 6 is a front view of the turning work vehicle to which a state in which the gas cylinder 1 is tilted for replacement is added.

7 is a left side view of the embodiment in which the gas cylinder 1 is arranged below the seat 3. FIG.

FIG. 8 is a front view showing a state in which the gas cylinder 1 is arranged below the seat 3;

FIG. 9 is a partial front sectional view of the gas cylinder 1;

FIG. 10 is a partial plan sectional view of the gas cylinder 1;

11 is a side view of the gas cylinder 1. FIG.

[Explanation of symbols]

 E Gas engine 1 Gas cylinder 2 Hydraulic oil tank 3 Seat 4 Bonnet 5 Cabin 6 Crawler traveling device 7 Swing frame 8 Main boom

──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Hideo Shimazoe 428 Enami, Okayama City Inside of Sairei Industrial Co., Ltd. (56) References JP-A-5-112144 (JP, A) U) Japanese Utility Model 63-182928 (JP, U) Japanese Utility Model 2-6759 (JP, U) Japanese Utility Model 1-166758 (JP, U) (58) Fields surveyed (Int. Cl. ⁷ , DB name) ) B60K 15/063 E02F 9/00 E02F 9/22

Claims (4)

(57) [Claims] 1. A turning work vehicle equipped with a gas engine using gas fuel as fuel, wherein a gas cylinder for storing gas fuel is arranged horizontally and arranged on the side opposite to a living space. 2. A turning work vehicle equipped with a gas engine using gas fuel as fuel, wherein a gas cylinder for storing gas fuel is disposed below a hydraulic oil tank for supplying hydraulic oil to a hydraulic device. Turning work vehicle. 3. A turning work vehicle equipped with a gas engine using gas fuel as fuel, wherein a gas cylinder for storing gas fuel is arranged obliquely at a position between the bonnet and the hydraulic oil tank. Turning work vehicle. 4. A turning work vehicle equipped with a gas engine using gas fuel as fuel, wherein a gas cylinder for storing gas fuel is disposed horizontally below a seat.