JP3263528B2 - Swing excavator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a revolving type excavator such as a backhoe or the like, and a fuel tank for making the whole arrangement compact so that the revolving frame and the working machine can be revolved within the width of the traveling device. And the engine arrangement is duplicated.

[0002]

2. Description of the Related Art Conventionally, the technology relating to the configuration of a fuel tank and the configuration of a visual gauge attached to the fuel tank has been known. For example, Japanese Utility Model Laid-Open No. 55-50802
It is like the technique described in Japanese Patent Publication No. In addition, a technique related to improvement of a lubrication port of a fuel tank is also known. For example, the technique described in Japanese Utility Model Laid-Open No. 60-53629 or Japanese Utility Model Laid-Open No. 58-68319 is used.

[0003]

SUMMARY OF THE INVENTION The present invention relates to a revolving excavator such as a backhoe, which makes it possible to revolve a working machine even if it enters a narrow place such as an alley, as long as the traveling device can travel. Therefore, the fuel tank, the engine, the radiator and the like are arranged in an overlapping manner in order to make the upper revolving superstructure narrow and compact. As described above, when the fuel tank T is disposed above the engine, the shape of the bottom of the fuel tank is limited. Therefore, in the present invention, a special shape having a step portion is used. In the fuel tank, the configuration of the visual gauge is also improved.

[0004]

The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described. In claim 1, a rotary excavator
In the fuel tank T, the fuel tank T has a stepped portion at the bottom.
14 to provide a concave deep part 12 and a flat shallow part 13,
The visual gauge 1 for displaying the remaining amount of the fuel tank T is flat.
Standing between the upper part of the shallow part 13 and the lower part of the concave deep part 12,
The upper end of the visual gauge 1 projects from the upper part of the flat shallow part 13
And the lower end of the visual gauge 1 is flat.
It was fixed with a bracket protruding below the shallow part 13.
The other end of the lower fixed pipe 6 is connected to the lower fixed pipe 6
And the lower connection hole between the fuel tank T and the concave deep portion 12.
These are connected by base 4 .

According to a second aspect, the turning of the first aspect is provided.
In the excavator, the bracket is connected to the bar of the visual gauge 1.
The lock plate 2 is also used .

[0006] According to a third aspect, the turning according to the first aspect.
In the excavator, the space below the fuel tank T
A radiator R, which is a part of the gin E, is disposed
The tie hose 4 is clamped to a part of the radiator R.

[0007]

Next, the operation will be described. According to claim 1, flat
In all parts from the shallow part 13 to the concave deep part 12,
Since the remaining fuel can be displayed, the last
Fuel can be used up to the amount, flat shallow
Replenish as soon as possible when part 3 is gone
Due to this, the tank capacity is felt small and the engine E
Fuel consumption is no longer felt abnormal
You .

According to the second aspect, the lower connecting hose is fixed.
Bracket to be used as the back plate of the visual gauge
Therefore, the back plate 2 is arranged in addition to the bracket.
The need is gone .

According to the third aspect, the lower connecting hose 4 is
Since it is clamped to a part of the radiator R,
The lower connecting hose 4 composed of the fuel tank T
Bubbling near the rotating radiator fan F
The radiator fan F
The part connecting hose 4 is not cut off by being caught
Was .

[0010]

Next, an embodiment will be described. FIG. 1 is a side view of a swing type excavator of the present invention, FIG. 2 is a plan view of a portion of an upper swing body in the swing type excavator, FIG. 3 is a side view of a portion of a fuel tank T, a radiator R, and a radiator fan F. 4 is a rear view of the fuel tank T, the engine E, the radiator R, and the radiator fan F, FIG. 5 is a plan view of the fuel tank T, and FIG.
7 is a side view of a portion of the visual gauge 1 and the lower connecting hose 4 in the fuel tank T, and FIG.
8 is an enlarged view of a portion of the visual gauge 1 and the lower connecting hose 4, FIG. 9 is a perspective view of the upper surface of the fuel tank T, FIG. 10 is a plan view of the fuel tank T, and FIG. FIG. 12 is a side view showing a configuration of a conventional visual gauge 17, and FIG. 13 is a side view showing a configuration of a conventional visual gauge 19.

Referring to FIG. 1, the overall structure of the rotary excavator will be described. The lower traveling body 26 is constituted by a crawler traveling device. A swivel table bearing 27 is disposed substantially at the center of the lower traveling unit 26, and the upper revolving unit 25 is supported by the rotatable table bearing 27 so as to be rotatable 360 degrees. A main boom 24 is erected at the front of the upper revolving unit 25, a bucket arm 22 is pivotally supported at an upper end of the main boom 24, and a bucket 23 is scooped and rotatably supported at the front end of the bucket arm 22. ing.

A seat 29 is disposed at the center of the upper revolving unit 25, and a canopy 28 is erected on the seat 29. An engine E is arranged below the seat 29, and a fuel tank T is arranged on the right side of the seat 29. At the front of the fuel tank T, a reservoir tank D for storing hydraulic oil is disposed. In FIG. 2, a swivel bearing 27 is disposed at the center of the upper swing body 25, a reservoir tank D is provided at a front right portion of the swivel bearing 27, a fuel tank T is provided at a rear portion thereof, and the fuel tank T is provided at a rear portion thereof.
A radiator R and a radiator fan F are disposed below the fuel tank T, and a part of the engine E is disposed below the fuel tank T so as to be partially inserted therein.

As shown in FIG. 2, the engine E is not entirely disposed below the fuel tank T, and a portion closer to the radiator fan F and the radiator R is partially provided in the fuel tank T. It is arranged so as to penetrate below. FIG. 3 discloses a state in which the fuel tank T is composed of the stepped portion 14 and the deep portion 12 and the flat shallow portion 13. On the upper surface of the fuel tank T, the upper portion of the flat shallow portion 13 is flat, but the upper surface of the concave deep portion 12 is formed as an inclined upper surface 11 which is gradually lowered.

The inclined upper surface 11 constitutes an overflow guide section for guiding the fuel that overflows at the time of supply at the fuel supply port 10 to the overflow pipe 7. Also, the upper pipe 5 protrudes from above the flat shallow portion 13 on the rear surface of the fuel tank T, and from the bottom of the concave deep portion 12,
The lower connecting hose 4 is protruded, and the visual gauge 1 is arranged between the two to display the remaining amount. A back plate 2 having a white color is arranged so that the back surface of the visual gauge 1 can be whitened to be easily seen. The back plate 2 has a bracket for attaching a lower fixing pipe 6 for fixing a lower end of the visual gauge 1. I also use it. 3, the lower connecting hose 4 is fixed to a fan cover C of a radiator fan F by a clamp P. Since the lower connecting hose 4 is a flexible pipe, by fixing the lower connecting hose 4 to the fan cover C, the lower connecting hose 4 does not get caught in the radiator fan F.

In FIG. 4, an extra-body guide pipe 9 for discharging the overflow of the fuel oil collected in the overflow pipe 7 from the overflow guide portion, which is also used by the upper inclined surface 11 of the fuel tank T, to the outside of the body. Is provided. The extra-body guide pipe 9 is fixed to the side of the battery 8 and protrudes below the upper swing body 25. FIG. 4 discloses a state in which the engine E, the radiator fan F, and the radiator R are disposed so as to enter under the flat shallow portion 13 of the fuel tank T.

FIGS. 5, 6, 7 and 8 show the parts of the visual gauge 1, the back plate 2, the upper pipe 5 and the lower fixed pipe 6. FIG. The back plate 2 is colored white, and the back plate 2 is fixed to the fuel tank T. The back plate 2 serves to raise the remaining amount of fuel of the visual gauge 1, and firmly supports the lower end of the visual gauge 1, and serves to fix the lower fixing pipe 6 for connecting to the lower connecting hose 4. ing. Although the lower fixed pipe 6 and the upper pipe 5 are formed of metal pipes, since the visual gauge 1 and the lower connecting hose 4 are formed of flexible pipes, it is necessary to strongly support these ends. , The back plate 2 and the lower fixed pipe 6 are required.

In the case of an ordinary rectangular parallelepiped fuel tank, the lower fixing pipe 6 can be fixed directly to the bottom of the tank.
In the case where the back plate 2 is composed of two portions, that is, the flat shallow portion 13 and the concave deep portion 12, there is no portion for attaching the lower fixed pipe 6, so that the back plate 2 is arranged to protrude downward from the flat shallow portion 13. It will be. As described above, the visual gauge 1 changes from the flat shallow portion 13 to the concave deep portion 12.
, The remaining fuel amount can be displayed over the entire area up to near the bottom of the concave deep portion 12.

Conventionally, as shown in FIGS. 12 and 13, in a fuel tank T composed of a step portion 14, a flat shallow portion 13 and a concave deep portion 12, a portion of the concave deep portion 12 like a visual gauge 17 is used. It is provided on the side, like the visual gauge 19,
It was arranged on the side of the flat shallow portion 13. FIG.
When the visual gauge 17 is arranged on the side of the concave deep part 12 as shown in FIG.
Can be displayed, but the remaining amount d above the flat shallow portion 13 cannot be displayed.

When a visual gauge 19 is arranged beside the flat shallow portion 13 as shown in FIG. 13, the remaining amount e of the flat shallow portion 13 can be displayed, but the remaining portion e of the concave deep portion 12 can be displayed. The quantity f cannot be displayed. According to the present invention, the back plate 2 is extended to support the lower fixed pipe 6 and the visual gauge 1 is disposed, so that the fuel remaining amount can be displayed over the entire flat shallow portion 13 and the concave deep portion 12. It became.

9, 10, and 11 disclose the configuration of an overflow guide section from the fuel supply port 10. Standing edges 18, 20, 21 and 30 are formed on the four surrounding surfaces surrounding the inclined upper surface 11, so that even if fuel overflows at the time of supply at the fuel supply port 10, the fuel falls directly down. It is configured so that there is no. Then, it flows on the inclined upper surface 11 and is collected in the lowermost overflow pipe 7. Since the overflow pipe 7 is connected to the external guide pipe 9 in FIG.
It will be discharged out of the fuselage without falling on the engine E and igniting.

[0021]

As described above, the present invention has the following advantages. As shown in claim 1, a swivel type
In the fuel tank T of the excavator, the fuel tank T
The stepped portion 14 is formed in the concave portion, and the concave deep portion 12 and the flat shallow portion 13 are formed.
A visual gauge 1 for displaying the remaining amount of the fuel tank T
Is between the upper part of the flat shallow part 13 and the lower part of the concave deep part 12.
The visual gauge 1 is erected at the upper end of the flat shallow portion 13
Connected to the upper pipe 5 projecting from
The end is provided by a bracket protruding below the flat shallow part 13.
The lower fixed pipe connected to the fixed lower fixed pipe 6
6 and the concave deep part 12 of the fuel tank T
From the flat shallow part 13
In all parts up to the concave deep part 12, the fuel remaining amount is displayed.
To the last small amount.
The fuel can be used, and the flat shallow portion 13
When it runs out, replenish it as soon as possible,
Or the fuel consumption of engine E
The amount was no longer felt abnormal
You .

According to a second aspect of the present invention, the lower connecting hose is fixed.
Bracket for the back plate 2 of the visual gauge
Therefore, it is necessary to take back plate 2 and provide it separately
Therefore, the number of parts could be reduced .

The radiator R may be a fuel tank.
The lower connecting hose of the radiator R
Since it was partially clamped, it was constructed with a flexible pipe.
The lower connecting hose 4 thus formed is turned under the fuel tank T,
It is possible to wobble near the rotating radiator fan F
No, the lower connecting hose to the rotation of the radiator fan F
4 was not caught and cut off.
You .

[Brief description of the drawings]

FIG. 1 is a side view of a rotary excavator according to the present invention.

FIG. 2 is a plan view of an upper revolving unit in the revolving excavator.

FIG. 3 is a side view of a portion including a fuel tank T, a radiator R, and a radiator fan F.

FIG. 4 is a rear view of a portion including a fuel tank T, an engine E, a radiator R, and a radiator fan F.

FIG. 5 is a plan view of a fuel tank T.

FIG. 6 is a side view of the visual gauge 1 and the lower connecting hose 4 in the fuel tank T.

FIG. 7 is a rear view of the fuel tank T and the visual gauge 1;

FIG. 8 is an enlarged view of a visual gauge 1 and a lower connecting hose 4;

FIG. 9 is a perspective view of the upper surface of a fuel tank T.

FIG. 10 is a plan view of a fuel tank T.

FIG. 11 is a side view showing an overflow pipe 7 of the fuel tank T.

FIG. 12 is a side view showing a configuration of a conventional visual gauge 17;

FIG. 13 is a side view showing the configuration of a conventional visual gauge 19;

[Explanation of symbols]

 T Fuel tank E Engine D Reservoir tank R Radiator F Radiator fan P Clamp 1 Visual gauge 2 Back plate 12 Deep concave portion 13 Flat shallow portion 14 Step portion

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-54849 (JP, U) JP-A 5-73049 (JP, U) (58) Fields surveyed (Int. Cl. ⁷ , DB name) E02F 9/00

Claims (3)

(57) [Claims] 1. In a fuel tank T of a rotary excavator,
The fuel tank T has a stepped portion 14 at the bottom, and a concave deep portion 12 and a flat shallow portion 13 are provided. The visual gauge 1 for displaying the remaining amount of the fuel tank T has an upper portion of the flat shallow portion 13 and a concave portion. It stands between the lower part of the depression 12 and the upper end of the visual gauge 1
The lower end of the visual gauge 1 is connected to an upper pipe 5 projecting from the upper part of the flat shallow portion 13, and the lower end of the visual gauge 1 is connected to a lower fixed pipe 6 fixed by a bracket projecting below the flat shallow portion 13. And the other end of the fuel tank T and the concave deep portion 12 of the fuel tank T are connected by a lower connecting hose 4. 2. The swing-type excavator according to claim 1 , wherein
A turning type excavator wherein the bracket is also used as a back plate 2 of a visual gauge 1. 3. The swiveling excavator according to claim 1 , wherein
A rotary excavator wherein a radiator R, which is a part of the engine E, is disposed in a space below a fuel tank T, and the lower connecting hose 4 is clamped to a part of the radiator R.