JP2895283B2 - Bonnet structure of 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 layout of a hood and an engine of a turning work vehicle such as a backhoe.

[0002]

2. Description of the Related Art Conventionally, in a turning work vehicle such as a backhoe, the arrangement of a bonnet, an engine, and a hydraulic oil tank is
It was configured as shown in FIG. 10 and FIG. FIG. 10 shows an opening / closing hood 10a with respect to the hood 10.
FIG. 11 is a plan view of a prior art in which the front and rear are opened and closed by an upper and lower opening / closing axis PP, and FIG.
It is a top view of the prior art in which the opening and closing axis PP is parallel.

[0003]

SUMMARY OF THE INVENTION The present invention overcomes the disadvantages of the prior art. Immediate Chi, La Jietafan 1
The exhaust air from the 5 are discharged smoothly from the exhaust air from the radiator grille 40, and by the exhaust air of the radiator 12, Ru Nodea configured as can also be carried out cooling of the hydraulic oil tank 14. Also , a radiator exhaust grill 40 is provided so that the cooling air can be exhausted from the radiator fan 15 with as little resistance as possible, and a hydraulic oil tank 14 that guides exhaust air toward the radiator exhaust grill 40 is disposed. The oil gauge 41 of the hydraulic oil tank 14 is attached to the radiator exhaust grill 40 to make it easier to see.

[0004]

The problems to be solved by the present invention are as described above. Next, means for solving the problems will be described. In claim 1, a swivel spindle is provided on the traveling device.
A swivel frame is arranged via a receiver, and the swivel frame is
It consists of a seat, bonnet, engine, etc.
Equipped with an upper body structure, the swivel frame has an arc shape at the back
And the working machine is placed on the front end of the swivel frame up and down.
Pivotable via the work implement pivot so that it can operate in
Dimensions behind the swivel frame of
Set the slope within the width of the traveling device, and when digging on the right side in the traveling direction
Swivel the swivel frame to the right outside of the work equipment and traveling equipment.
When the side ends are located on approximately the same straight line,
The work implement pivot at the front end is located within the right width of the traveling device
And place the engine inside the hood,
Operates at the position facing the radiator attached to the engine
Place the oil tank, the side of the hydraulic oil tank and the radiator
The exhaust air discharge surface side of the
Radiator exhaust grille approximately the same as the
It is open to the socket .

According to a second aspect, the turning of the first aspect is provided.
In the hood structure of the work vehicle, the radiator exhaust
The oil level gauge of the hydraulic oil tank is arranged on the oil tank .

[0006]

Next, the operation of the present invention will be described. That is, the radiator
A hydraulic oil tank 14 at a position facing the fuel tank 12;
Angle of the hydraulic oil tank 14 and the radiator 12
The cooling air of the radiator 12 is
After hitting the side of the tank 14 and cooling the hydraulic oil,
The air passes through the radiator exhaust grill 40 and is discharged to the outside air.
It can be issued.

Conventionally, the hydraulic oil tank is
If it is located inside, the remaining hydraulic oil in the hydraulic oil tank
In order to know the amount, the bonnet 10 must be opened each time.
Although it was necessary, in the present invention, the radiator
Oil level gauge 41 is located inside exhaust grill 40
Without opening the hood 10
The remaining amount of the hydraulic oil tank 14 can be known.

[0008]

Next, an embodiment will be described. 1 is a left side view of the entire backhoe of the turning work vehicle of the present invention, FIG. 2 is a right side view of the entire backhoe of FIG. 1, FIG. 3 is a front view of the same backhoe, and FIG. FIG. 5 is a plan view of the backhoe, FIG. 6 is a plan view of a portion of the swivel frame 2 showing the opening / closing axis PP and the engine axis QQ, and FIG.
FIG. 8 is a plan view of the swivel frame 2 showing the internal arrangement of FIG.
Is a side sectional view showing the inside of the hood 10, and FIG. 9 is a rear sectional view of the same.

Referring to FIGS. 1 to 5, the overall construction of the turning work vehicle according to the present invention will be described. In this embodiment, the backhoe is illustrated, but another turning work vehicle may be used. The backhoe is a crawler type traveling device 2
2, a traveling body is provided, and between the crawler-type traveling device 22, an earth discharging plate 24 is supported by an earth discharging plate cylinder 28 so as to be vertically rotatable. Further, a turning table bearing 30 is disposed at the center of the crawler type traveling device 22, and the turning motor 6 is disposed at the center of the turning table bearing 30, and the center position of the turning motor 6 is configured as the turning center O. ing.

A swivel frame 2 is provided above the swivel bearing 30.
Is fixed. The revolving base frame 2 is formed in a semicircular shape as shown in FIG. 5, and a working machine fulcrum C is disposed at a front portion. It is pivotally supported by a shaft 29. Further, a fitting mounting frame 34 is provided upright in a substantially diametric direction of the semicircular revolving base frame 2. Along the outfit fitting mounting frame 34,
An opening / closing axis PP is a main part of the present invention.
The work machine A has a main part constituted by a main boom 3, a bucket arm 21 and a bucket 4. The main boom 3 is vertically rotatable by a boom cylinder 18, and the bucket arm 21 is vertically moved by an arm cylinder 19. It is rotatable.

The bucket 4 is pivotally supported by the tip of a bucket arm 21, and is pivoted by a bucket cylinder 20. The main boom 3 can be swung right and left by a swing cylinder 16 in order to make it possible to dig a side ditch. The swing cylinder 16 is shown in FIG.
As shown in the figure, the seat 9 is disposed at a position opposite to the seat 9 and below the hydraulic oil tank 14 and the fuel tank 31.

A seat 9 and a canopy roof 23 are disposed on the revolving base frame 2 on the left side, and a working machine A, a hydraulic oil tank 14 and a fuel tank 31 are disposed on the right side. ing. The hood 10 and the canopy support columns 26 and 27 are supported by an outfitting mounting frame 34. The part of the fitting mounting frame 34 constitutes the opening / closing axis PP of the bonnet 10 on the side surface of the seat 9. The bonnet 10 is formed in a half-moon shape, and the string portion is slanted, so that the crawler-type traveling device 2 is formed.
The fitting mounting frame 34 and the opening / closing axis P-
P is configured.

The canopy support columns 26 and 27 of the canopy roof 23 are formed in front and rear open leg shapes so as not to interfere with the movement of the operator from the left entrance / exit E to the right walk-through entrance / exit D. In addition, support pillar 26.2
7 are staggered. The canopy support column 26 is separated from a lower canopy mounting column 35, and the canopy mounting column 35 is attached to an outfitting component mounting frame 34.
Constitutes a reinforcing portion in the central portion of the.

An operation column 25 is arranged at the front of the seat 9 to operate the work machine A and to operate the crawler traveling device 2.
An operation lever for performing the operation 2 is arranged. Further, a left entrance / exit E is disposed between the seat 9 and the operation column 25, and the left entrance / exit E is a right walk-through entrance / exit D.
, So that the operator can get on and off from either side.

A control valve 5 is arranged below the left entrance E. Further, since the work machine A is disposed before the upper body front end B1 of the upper body structure B, even if the main boom 3 itself is swung, there is no possibility of interfering with the hood 10. A swing mechanism can be configured. The fuel tank 31 is arranged at the position where the main boom 3 is swung to the maximum, and the extra space up to that point is configured as the walk-through doorway D. Therefore, the walk-through entrance D is closed by the turned main boom 3 when digging a side ditch. That is, the walk-through entrance D and the swing space of the main boom 3 are also used.

Next, a description will be given with reference to FIGS. The upper body structure B is formed in an arc shape, and the rear of the upper body structure B is positioned inside a circle that falls within the width of the crawler-type traveling device 22 when the rear body is turned around the turning center O. It was configured as follows. Further, the engine 11 and the seat 9 are disposed at different positions on the left and right with the left and right center lines M interposed therebetween, so that the two do not overlap.
The engine 11 is disposed obliquely as shown in a plan view, and a radiator 12 and an oil cooler 13 are disposed at the right end. The engine axis QQ of the engine 11 is also inclined, but is smaller than the inclination angle of the opening / closing axis PP, so that the two intersect. Therefore, when the bonnet 10 is opened, the radiator 12 and the radiator fan 15 of the engine 11 are completely exposed.

The right side of the engine 11 has an engine axis Q
-Q, a radiator fan 15, a radiator 12, and an oil cooler 13 are fixed. Cooling air from the radiator fan 15 passes through the radiator 12 and is blown out. And is guided in the direction of the radiator exhaust grill 40 opened in the bonnet 10. The side wall surface of the hydraulic oil tank 14 and the radiator 12 are arranged at an acute angle, and the hydraulic oil tank 14 constitutes a guide plate for guiding cooling air toward the radiator exhaust grill 40. A hydraulic pump 7 is provided on the left side of the engine 11, and a battery 8 is provided below the hydraulic pump 7.
Is arranged. A hydraulic oil tank 14 is disposed at a position in front of the engine 11, and a fuel tank 31 is disposed in front of the hydraulic oil tank 14.

The fuel tank 31 is disposed obliquely and has a long shape along the walk-through entrance D. The position of the fuel tank 31 is configured at the right end position of the left and right swing of the main boom 3. A work implement fulcrum C is formed at a position forward of the upper body front end B1 of the upper body structure B, and the work implement fulcrum C is composed of the work implement pivot 1 and the work implement pivot 29. Have been. When the main boom 3 swings leftward, it swings to the position of the front handrail 17 in front of the operation column 25,
Since the front handrail 17 is located at a position retracted from the front end B1 of the upper body, the main boom 3 and the front handrail 1 are disposed.
7 does not interfere.

The bonnet 10 is formed in a half-moon shape, and the string portion is formed diagonally. A fuel tank 31 is arranged along the oblique chord. A swivel table bearing 30 is arranged on the side of the seat 9, and the swivel motor 6 and the swivel center O are formed inside the swivel table bearing 30. As shown in FIG. 2, the rear portion is completely arc-shaped with respect to the front-rear center line N passing through the turning center O of the aircraft, and the arc forms a turning arc centered on the turning center O. . The arc is configured to enter between the left and right crawler traveling devices 22.

Next, a description will be given with reference to FIGS. An outfit component mounting frame 34 is provided in the diametrical direction of the swivel frame 2 so as to pass right next to the turning center O, and is erected in a U-shape. Are arranged in parallel. A mounting bracket 32 for the canopy support column 26 is provided at a center position of the outfitting mounting frame 34. A canopy mounting column 35 erected from the swivel frame 2 is connected to a center position of the fitting mounting frame 34, and a mounting bracket 32 is formed on an upper surface of the canopy mounting column 35. The canopy support column 26 is mounted on the mounting bracket 32. In addition, since the fixture 8 is fixed by the fitting mounting frame 34 formed in a “U” shape, the mounting base of the battery 8 can be mounted on the fitting mounting frame 34.

The bonnet 10 is pivotally supported by the fitting mounting frame 34 via a gas spring 33. The gas spring 33 reduces the impact when the bonnet 10 is opened and closed. As shown in FIG. 8, a radiator exhaust grill 40 for exhausting cooling air from the radiator fan 15 is opened in a side wall of the bonnet 10, and a part of the radiator exhaust grill 40 is provided with an oil amount gauge. 41. The oil amount gauge 41 can detect the remaining amount of hydraulic oil in the hydraulic oil tank 14.

[0022]

As described above, the present invention has the following advantages. That is, the structure as in claim 1
Since the hydraulic oil tank 14 is arranged at a position facing the radiator 12 and the surface of the hydraulic oil tank 14 and the surface of the radiator 12 are arranged at an acute angle, the cooling air of the radiator 12 After hitting the side and cooling the hydraulic oil, the radiator exhaust grill 4
It can be discharged to the outside air through zero.

According to the second aspect of the present invention , conventionally, if the hydraulic oil tank is disposed inside the bonnet, the bonnet 10 must be opened each time in order to know the remaining amount of the hydraulic oil in the hydraulic oil tank. However, in the present invention, since the oil amount gauge 41 is disposed at a position inside the radiator exhaust grill 40, the remaining oil in the hydraulic oil tank 14 can be maintained without opening the bonnet 10. You can know the quantity.

[Brief description of the drawings]

FIG. 1 is an overall left side view of a backhoe of a turning work vehicle according to the present invention.

2 is an overall right side view of the backhoe of FIG. 1;

FIG. 3 is a front view of the backhoe.

FIG. 4 is a rear view of the backhoe with the hood 10 opened.

FIG. 5 is a plan view of the backhoe.

FIG. 6 is a plan view of a portion of the swivel frame 2 showing the opening / closing axis PP and the engine axis QQ.

FIG. 7 is a plan view of the swivel frame 2 showing an internal arrangement of the hood 10;

FIG. 8 is a side sectional view showing the inside of the bonnet 10;

FIG. 9 is a rear sectional view of the same.

FIG. 10 shows an opening / closing hood 1 with respect to the hood 10;
FIG. 1 is a plan view of a related art in which Oa is opened and closed forward and backward by an opening and closing axis PP along a vertical direction.

FIG. 11 is a plan view of a related art in which an engine axis QQ of the engine and an opening / closing axis PP are parallel to each other.

[Explanation of symbols]

 D Walk-through entrance PP opening / closing axis of bonnet Q-Q engine axis M Left / right center line N Front / rear center line 2 Swivel frame 3 Main boom 10 Bonnet 11 Engine 12 Radiator 13 Oil cooler 14 Hydraulic oil tank 15 Radiator fan 40 Radiator exhaust grill 41 Oil level gauge

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Sumi Yonekura 428 Enami, Okayama City Inside of Seirei Kogyo Co., Ltd. (56) References JP-A 2-11851 (JP, U) JP-A 61-7850 (JP, U) Japanese Utility Model 4-65850 (JP, U) Japanese Utility Model 4-4944 (JP, U) Japanese Utility Model 4-108645 (JP, U) (58) Fields surveyed (Int. Cl. ⁶ , DB name) ) E02F 9/00 E02F 9/08

Claims (2)

(57) [Claims] 1. A swivel base on a traveling device via a swivel base bearing.
Place the frame, and place the seat or
Equipped with an upper body structure composed of a net, engine, etc.
The swivel frame has an arcuate rear portion.
At the front end of the base frame, place the work machine vertically and horizontally.
A turning work vehicle that is operably supported via a work machine pivot
The maximum dimension behind the swivel frame is
Within the width, when turning the right side groove in the traveling direction
Turn the work machine and the right outer edge of the traveling device so that they are almost
When positioned above, the work implement pivots at the front end of the swivel frame.
Make sure that the support is located within the right width of the traveling device, and
The engine is located inside the Internet and is attached to the engine.
Hydraulic oil tank is located at the position facing the radiator
And the side of the hydraulic oil tank and the exhaust air discharge surface of the radiator
At an acute angle, and the opening area of the radiator fan
A bonnet structure for a turning work vehicle, wherein a substantially equivalent radiator exhaust grill is opened in the bonnet. 2. The hood of a turning work vehicle according to claim 1.
In the structure, radiator exhaust grille, hydraulic oil tank
The bonnet structure of a turning work vehicle, wherein an oil amount gauge is arranged .