JP2557802Y2 - 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 a handle for a work vehicle such as a backhoe when a walk-through can be entered and exited, and a guard pipe at a rear portion of a turntable frame.

[0002]

2. Description of the Related Art Conventionally, in a turning work vehicle such as a backhoe, a technique in which a hydraulic oil tank and a fuel tank are provided side by side is known as follows.
There was a conventional technique as shown in FIGS. FIG. 9 is a side view of a conventional turning work vehicle provided with a fuel tank 31 and a hydraulic oil tank 14, and FIG. 10 is a perspective view of the fuel tank 31 and the hydraulic oil tank 14 in an exploded state. As shown in FIG. 9, there is a technology in which the fuel tank 31 is arranged in front and the hydraulic oil tank 14 is arranged in a rear portion.
The fuel tank 31 and the fuel tank 31 were completely separate as shown in FIG. 10, and were not fixed. Therefore, since both tanks are fixed independently, the mounting reliability cannot be increased unless the span of the mounting bolt is increased as shown by the distance b in FIG. Therefore, the hydraulic oil tank 14 and the fuel tank 31 have a long front and rear configuration,
There was no extra space for a walk-through entrance.

In a turning work vehicle such as a backhoe,
The protector for protecting the side rear portion and the oblique rear portion of the swivel frame 2 has been known in the art as shown in FIGS. FIG. 6 is a plan view of a backhoe provided with a conventional integrated protector 36, and FIG. 7 is a side view of the backhoe provided with an integrated protector 36 and an integrated guard pipe 38. That is, in the related art, the protector that protects the oblique rear surface and the side surface of the swivel frame 2 is configured as an integral protector 36 so as to be bent in the shape of “<”. However, when the oblique rear protection protector and the side protection protector are integrally formed as in the related art, when manufacturing a model whose dimensions and weight are changed, the portion of the integrated protector 36 and the integrated guard pipe are used. It was necessary to change all 38 parts to other parts, and it was not possible to share parts for a series of turning work vehicles. Further, when the protector is damaged due to collision with an obstacle, it is necessary to replace the oblique rear-side protection protector, the side-surface protection protector and the guard pipe integrally.

[0004]

According to the present invention, a side entrance E and a walk-through entrance D are provided on the left and right sides of the seat 9, respectively.
In the turning work vehicle capable of passing through, the getting-on / off handle 11 when getting on / off from the side of the walk-through entrance / exit D,
This is configured as a portion where the upper portions of the hydraulic oil tank 14 and the fuel tank 31 are connected. As a result, the mounting strength between the hydraulic oil tank 14 and the fuel tank 31 is improved, the span of the mounting bolts of both tanks is shortened, the front and rear length of the tank is shortened, and a portion of the walk-through entrance D is provided with a margin. Space was secured.

[0005] Further, by forming the side protection protector 7 for protecting the oblique side and the rear side surface of the swivel frame 2 and the oblique rear surface protection protector 6 separately, the side protection protector 7 having a different length can be provided. If it is mounted, the parts of the oblique rear surface protection protector 6 can be configured to use common parts even when manufacturing a turning work vehicle having different dimensions and weights.

[0006]

The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described. A hydraulic oil tank and a fuel tank are provided alongside the seat, and a walk-through door D and a side door E are provided on the left and right sides of the seat. The upper portion is joined, and a handle for getting on and off is provided at the joined portion. Further, in a turning work vehicle having a protector for protecting the rear side surface portion and the oblique rear portion of the swivel frame, the protector is divided into a side surface protector 7 and an oblique rear surface protector 6, and protrudes from the oblique rear surface protector 6. The guard pipe 8 extends above the side protection protector 7.

[0007]

The present invention is constructed as described above and has the following effects. That is, the fuel tank 31 and the upper part of the hydraulic oil tank 14 are connected to each other, and
By arranging 1, the portion of the handle 11 serves as a reinforcing member, so that the mounting strength of the lower fixing bolt may be low, and the mounting span of the bolt can be shortened. Thereby, the hydraulic oil tank 14
The fuel tank 31 can also be made shorter in the front and rear directions, so that the space of the walk-through entrance D can be increased.

Conventionally, the integrated protector 36 and the integrated guard pipe 38 are integrally provided on the rear side surface and the oblique rear portion of the revolving base frame 2, so that a series of revolving work vehicles has a small length. Thus, even when the model is different or when a model having a slightly heavier weight is configured, completely different integrated protectors 36 and integrated guard pipes 38 are prepared. In the present invention, the oblique rear face protection protector 6 can be made into a common component by using the side protection protector 7 and the guard pipe 8 having different lengths.

[0009]

Next, an embodiment of the present invention will be described. 1 is an overall side view of the turning work vehicle of the present invention, FIG. 2 is an overall plan view of the turning work vehicle of FIG. 1, and FIG. 3 is a view of the turning work vehicle in a state where the side protection protector 7 is replaced with a heavy one. FIG. 4 is a side view showing the side protection protector 7, the oblique rear protection protector 6, and the guard pipe 8, and FIG. 5 is a side view when the side protection protector 7 and the guard pipe 8 are shortened.

1 and 2, the overall structure of a backhoe in a turning work vehicle will be described. The turntable frame 2 is rotatably supported on the crawler type traveling device 22 via a turntable bearing 30.
The excavator is pivotally supported at the front of the excavator so that the excavator can rotate up and down and swing right and left. In the excavator, the bucket arm 21 is pivotally supported at the tip of the main boom 3, and the bucket 4 is pivotally supported at the tip of the bucket arm 21. It is the bucket cylinder 20 that scoops and rotates the bucket 4,
An arm cylinder 19 rotates the bucket arm 21 up and down, and a boom cylinder 18 rotates the main boom 3 up and down. In addition, a swing cylinder 16 that supports the work implement pivot body left and right is provided on the right side of the swivel frame 2.

An operation column 25 is provided on the swivel frame 2.
And a seat 9 are arranged, and an engine room 10 is arranged at the rear. A fuel tank 31 and a hydraulic oil tank 14 are disposed on the left side of the seat 9. Also, between the left and right crawler-type traveling devices 22, a discharge plate 24 is provided.
Are pivotally supported so as to be vertically rotatable.
It is rotated by. Further, canopy support columns 26 project from the swivel base frame 2, and the canopy roof 23 is fixed to the upper ends of the canopy support columns 26. In the overall configuration described above, the swivel frame 2
A protector that protects the rear side surface and the oblique rear surface portion and also serves as a rear weight is conventionally constituted by an integrated protector 36 and an integrated guard pipe 38 as shown in FIGS. It was.

On the other hand, in the present invention, the protector is divided into the side protection protector 7 and the oblique rear protection protector 6. In addition, the guard pipe, which is conventionally fixed over the front and rear of the integrated guard pipe 38, is configured to protrude only from the oblique rear surface protection protector 6. Thus, when the backhoe is made into a series, and the length of the portion of the swivel frame 2 is different, the length of the side protection protector 7 is changed. In the case of a model having a large capacity of the bucket 4,
Since both the main boom 3 and the bucket arm 21 are heavy, it is necessary to provide a rear weight corresponding to this weight to the protector. In this case, as shown in FIG. The weight can be easily increased.

As shown in FIGS. 4 and 5, when the length of the swivel frame 2 is different, the guard pipe 8 may interfere with the lower portions of the canopy support columns 26. By preparing a pipe having a different length, the length of the guard pipe 8 can be made to correspond.

Next, the invention of claim 1 will be described with reference to FIG. FIG. 8 shows the hydraulic oil tank 14 and the fuel tank 31.
FIG. 9 is a side view of a backhoe showing a configuration in which upper portions are connected and upper portions are connected. Conventionally, as shown in FIGS. 9 and 10, the fuel tank 31 and the hydraulic oil tank 14 are provided side by side, but no member for connecting the two is provided. In the present invention, the fuel tank 31 and the hydraulic oil tank 14 are formed in an elongated shape facing upward, and the span of the fixing bolt for fixing the lower parts of both tanks is shortened. There was a connection at the top of both tanks. And the connecting portion is extended,
This is configured as the getting-on / off handle 11 in the case of getting on and off from the walk-through getting-on / off entrance D side.

[0015]

[Effects of the Invention] The present invention is constructed as described above, and has the following effects. That is, since the vehicle is configured as in claim 1, the side work entrance E and the walk-through entrance D are provided on the left and right sides of the seat 9, and in the case of a turning work vehicle capable of passing through, in the case of a turning work vehicle, the walk-through entrance D side. The getting-off handle 11 for getting on and off is configured as a portion connecting the upper portions of the hydraulic oil tank 14 and the fuel tank 31. Thereby, the mounting strength between the hydraulic oil tank 14 and the fuel tank 31 is improved, the span of the mounting bolts of both tanks is shortened, the front and rear length of the tank is shortened, and the extra space at the walk-through entrance D portion is provided. Was secured. Also, while keeping both tanks the same capacity as before, the front and rear dimensions were reduced, and the mounting reliability was secured despite the shortened mounting span. In addition, it was possible to secure safety when getting on and off from the walk-through entrance D.

Since the rear side surface of the swivel frame 2 and the side protection protector 7 for protecting the oblique side surface and the oblique rear surface protection protector 6 are separately formed, the side surface protection protector 7 is formed. If different lengths are installed, common parts can be used for the oblique rear protection protector 6 even when turning vehicles with different dimensions and weights are manufactured. It is. In particular, when the capacity of the bucket 4 is increased, the weight of the bucket arm 21 and the main boom 3 also increases, and a rear weight corresponding to the weight is required. In this case, the length is the same. By changing to the side protection protector 7 having a large thickness, the body balance can be easily secured. Further, when the protector is damaged by collision with an obstacle, the oblique rear face protector 6 and the side face protector 7 are protected.
It can be replaced for each part of the guard pipe 8.

[Brief description of the drawings]

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

FIG. 2 is an overall plan view of the turning work vehicle of FIG. 1;

FIG. 3 is an overall plan view of the turning work vehicle in a state where the side protection protector 7 is replaced with a heavy one.

FIG. 4 is a side view showing a part of a side protection protector 7, an oblique rear protection protector 6, and a guard pipe 8.

FIG. 5 is a side view when the side protection protector 7 and the guard pipe 8 are shortened.

FIG. 6 is a plan view of a backhoe provided with a conventional integrated protector 36;

FIG. 7 shows an integrated protector 36 and an integrated guard pipe 3.
FIG. 8 is a side view of the backhoe provided with 8;

FIG. 8 is a side view of a backhoe showing a configuration in which a hydraulic oil tank 14 and an upper part of a fuel tank 31 are connected.

FIG. 9 is a side view of a conventional turning work vehicle provided with a fuel tank 31 and a hydraulic oil tank 14;

FIG. 10 is a perspective view of a disassembled state of a fuel tank 31 and a hydraulic oil tank 14.

[Explanation of symbols]

 D Walk-through entry / exit E Side entrance / exit 2 Turntable frame 6 Diagonal rear protection protector 7 Side protection protector 8 Guard pipe 9 Seat 10 Engine room 11 Getting on / off handle 14 Hydraulic oil tank 31 Fuel tank

Claims (2)

(57) [Scope of request for utility model registration] 1. A turning work vehicle in which a hydraulic oil tank and a fuel tank are provided side by side of a seat, and a walk-through entrance D and a side entrance E are provided on the left and right sides of the seat so that the vehicle can get on and off from both sides. Join the tank and the top of the fuel tank,
A turning work vehicle, wherein a handle is provided at the joint. 2. A turning work vehicle having a protector for protecting a rear side surface portion and an oblique rear portion of a swivel frame, the protector is divided into a side surface protector 7 and an oblique rear surface protector 6, and the oblique rear surface protector 6 is divided into two parts.
A guard pipe 8 protruding from the upper surface of the side work protector 7.