JPH0540359U - Turning work vehicle - Google Patents

Abstract

(57) [Abstract] [Purpose] In a swing work vehicle, the mounting strength of the hydraulic oil tank 14 and the fuel tank 31 is improved, and the span of the mounting bolts of both tanks is shortened to shorten the front-rear length of the tank. , A side space protector 7 and an oblique rear surface protector 6 for separately providing a space for the walk-through entrance D and protecting the rear side surface of the swivel frame 2 and the oblique side surface are separately provided. When manufacturing turning vehicles with different dimensions and weights, we have made common parts. [Structure] In a turning work vehicle in which a hydraulic oil tank and a fuel tank are provided on the side of the seat and a walk-through entrance D and side entrance E are provided on the left and right of the seat, the upper part of the hydraulic oil tank and the fuel tank Was joined, and a handle for getting on and off was provided at the joined portion. Further, the protector is divided into two parts, a side surface protection protector 7 and an oblique rear surface protection protector 6.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a structure of a handle for enabling walk-in and get-off in a swing work vehicle such as a backhoe and a guard pipe at a rear portion of a swing platform frame.

[0002]

[Prior Art]

 Conventionally, in a turning work vehicle such as a backhoe, a technology in which a hydraulic oil tank and a fuel tank are provided together has a conventional technology as shown in FIGS. 9 and 10. FIG. 9 is a side view of a conventional swivel work vehicle in which a fuel tank 31 and a hydraulic oil tank 14 are provided together, and FIG. 10 is a perspective view of a disassembled state of the fuel tank 31 and the hydraulic oil tank 14. As shown in FIG. 9, there was a technique in which the fuel tank 31 was placed in front and the hydraulic oil tank 14 was placed in the rear part, but the hydraulic oil tank 14 and the fuel tank 31 are completely separate as shown in FIG. And it was not fixed. Therefore, since both tanks were fixed independently, the mounting reliability could not be improved unless the span of the mounting bolt was increased as shown by the distance b in FIG. Therefore, the hydraulic oil tank 14 and the fuel tank 31 are long in the front-rear direction, and an extra space for providing a walk-through entrance / exit cannot be provided.

Further, in a turning work vehicle such as a backhoe, as a protector for protecting a side surface rear portion and an oblique rear portion of the swivel base frame 2, a technique as shown in FIGS. 6 and 7 has been publicly known. FIG. 6 is a plan view of a backhoe provided with a conventional integrated protector 36, and FIG. 7 is a side view of a backhoe provided with the integrated protector 36 and an integrated guard pipe 38. That is, conventionally, the protector that protects the oblique rear surface and the side surface of the swivel base frame 2 has been formed by bending the integrated protector 36 into a dogleg shape. However, when the diagonal rear surface protector and the side surface protector are integrally formed as in the prior art, the integrated protector 36 and the integrated guard pipe can be used when manufacturing a model whose size and weight are changed. It was necessary to change all of the 38 parts to other parts, and it was impossible to share parts with the series of turning vehicles. Further, when the protector is damaged by collision with an obstacle, it is necessary to integrally replace the diagonal rear surface protector, the side surface protector and the guard pipe.

[0004]

[Problems to be solved by the device]

 The present invention has a side entry / exit E and a walk-through entry / exit D on the left and right sides of the seat 9, and in a turning work vehicle that enables passage, a handle 11 for entry / exit from the side of the walk-through entry / exit D is provided. The hydraulic oil tank 14 and the fuel tank 31 are connected to each other at their upper portions. As a result, the mounting strength of 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 lengths of the tanks are shortened, and the portion of the walk-through entrance / exit D is removed. We secured a spare space.

Further, by constructing the rear side surface of the swivel frame 2, the side surface protector 7 for protecting the oblique side surface, and the oblique rear surface protection protector 6 separately, the side surface protector 7 has different lengths. When the equipment is attached, the diagonal rear surface protection protector 6 can be configured so that the common parts can be used even when manufacturing turning work vehicles having different sizes and weights.

[0006]

[Means for Solving the Problems]

 The problems to be solved by the present invention are as described above. Next, the means for solving the problems will be described. A hydraulic oil tank and a fuel tank are installed on the side of the seat, and a walkthrough entrance D and a side entrance E are provided on the left and right of the seat. The upper part is joined, and a boarding handle is provided at the joined part. Further, in a revolving work vehicle having a protector for protecting the rear side surface portion and the diagonal rear portion of the revolving base frame, the protector is divided into a side surface protection protector 7 and an oblique rear surface protection protector 6, and the oblique rear surface protection protector 6 projects. The projecting guard pipe 8 is extended above the side surface protector 7.

[0007]

[Action]

 Since the present invention is configured as described above, it has the following effects. That is, since the upper part of the fuel tank 31 and the upper part of the hydraulic oil tank 14 are connected to each other and the boarding / alighting handle 11 is arranged at the connecting part, the part of the boarding / alighting handle 11 serves as a reinforcing member, so that the lower fixing bolt Since the mounting strength of can be low, the mounting span of the bolt can be shortened. As a result, both the hydraulic oil tank 14 and the fuel tank 31 can be shortened in the front-rear direction, so that the space for the walk-through entrance / exit port D can be increased.

Further, conventionally, the integral protector 36 and the integral guard pipe 38 are integrally attached to the rear side surface and the slanted rear portion of the swivel base frame 2, so that the swivel work vehicle in a series is slightly longer. In the case of different heights or in the case of constructing a model with a slightly heavier weight, a completely different type of integral protector 36 and integral type guard pipe 38 were intended. In the present invention, the diagonal rear surface 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]

【Example】

 Next, an embodiment of the present invention will be described. 1 is an overall side view of the swivel work vehicle of the present invention, FIG. 2 is an overall plan view of the swivel work vehicle of FIG. 1, and FIG. 3 is a swivel work vehicle with the side protection protector 7 replaced with a heavier one. 4 is an overall plan view, FIG. 4 is a side view showing a side protection protector 7, an oblique rear surface 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.

1 and 2, the overall structure of the backhoe in the turning work vehicle will be described. The swivel frame 2 is rotatably supported on the crawler type traveling device 22 via a swivel bearing 30, and the excavator can be swung up and down on the front part of the swivel frame 2 so that the excavator can be turned up and down. It is swingably supported. The excavator has a bucket arm 21 pivotally supported by the tip of the main boom 3 and a bucket 4 pivotally supported by the tip of the bucket arm 21. It is the bucket cylinder 20 that scoops and rotates the bucket 4, the arm cylinder 19 that rotates the bucket arm 21 up and down, and the boom cylinder 18 that rotates the main boom 3 up and down. . Further, a swing cylinder 16 that pivotally supports the work machine pivot body to the left and right is provided on the right side of the swivel base frame 2.

An operation column 25 and a seat 9 are arranged on the swivel frame 2, and an engine room 10 is arranged at the rear part. On the left side of the seat 9, a fuel tank 31 and a hydraulic oil tank 14 are arranged. Further, an earth-discharging plate 24 is pivotally supported between the left and right crawler type traveling devices 22 so as to be vertically rotatable, and is rotated by an earth-discharging plate cylinder 28. Further, canopy support columns 26, 26 project from the swivel base frame 2, and a canopy roof 23 is fixed to the upper ends of the canopy support columns 26, 26. In the overall structure as described above, a protector that protects the rear side surface and the oblique rear surface of the swivel frame 2 and doubles as a rear weight is conventionally provided as shown in FIGS. 6 and 7. It was constituted by the body protector 36 and the integrated guard pipe 38.

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

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

Next, referring to FIG. 8, the invention of claim 1 will be described. FIG. 8 is a side view of the backhoe showing a configuration in which the hydraulic oil tank 14 and the fuel tank 31 are provided side by side and the upper portions are connected. Conventionally, as shown in FIG. 9 and FIG. 10, the fuel tank 31 and the hydraulic oil tank 14 were provided side by side, but no member was provided to connect them. In the present invention, the fuel tank 31 and the hydraulic oil tank 14 are formed in a slender shape upward, and the span of the fixing bolts for fixing the lower portions of both tanks is shortened. Therefore, they were connected at the top of both tanks. Then, the connecting portion is extended and configured as a boarding / alighting handle 11 in the case of boarding / alighting from the walk-through boarding / alighting entrance D.

[0015]

[Effect of the device]

 Since the present invention is configured as described above, it has the following effects. That is, since it is configured as in claim 1, in the case of a turning work vehicle in which the side entrance E and the walk-through entrance D are provided on the left and right of the seat 9, the walk-through entrance D The boarding / alighting handle 11 for getting on and off from the side is formed by connecting the upper portions of the hydraulic oil tank 14 and the fuel tank 31. This improves the mounting strength of the hydraulic oil tank 14 and the fuel tank 31, shortens the span of the mounting bolts of both tanks, and shortens the front-rear length of the tanks. It secured a large space. In addition, both tanks had the same capacity as the conventional one, and the front and rear dimensions were made smaller, and the installation span was shortened, but the installation reliability was able to be secured. In addition, it was possible to secure safety when getting on and off from the walk-through entrance / exit D.

Since the rear side surface of the swivel frame 2, the side surface protector 7 for protecting the oblique side surface and the oblique rear surface protector 6 are separately configured, the side surface protector 7 is constituted. By installing different lengths, it is possible to use common parts for the diagonal rear surface protector 6 even when manufacturing turning work vehicles with different body sizes and weights. I did. In particular, when the bucket 4 has a large capacity, the weight of the bucket arm 21 and the main boom 3 also becomes heavy, and a rear weight commensurate with this is required. In this case, the same length is required. By changing to the thick side protection protector 7, the body balance can be easily secured. Further, when the protector is damaged by collision with an obstacle, the oblique rear surface protector 6, the side surface protector 7, and the guard pipe 8 can be replaced individually.

[Brief description of 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.

FIG. 3 is an overall plan view of a swing work vehicle in which a side protection protector 7 is replaced with a heavier one.

4 is a side view showing a side protection protector 7, a diagonal rear protection protector 6, and a guard pipe 8. FIG.

FIG. 5 is a side view when the side surface 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 integral protector 36 and an integral guard pipe 3.
The side view of the backhoe which attached 8.

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

FIG. 9 is a side view of a conventional turning work vehicle in which a fuel tank 31 and a hydraulic oil tank 14 are provided together.

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 entrance / exit E Side entrance / exit 2 Swiveling frame 6 Diagonal rear surface protector 7 Side protection protector 8 Guard pipe 9 Seat 10 Engine room 11 Boarding handle 14 Hydraulic oil tank 31 Fuel tank

Claims (2)

[Scope of utility model registration request] 1. A turning work vehicle in which a hydraulic oil tank and a fuel tank are provided on the side of a seat, and a walk-through entry / exit port D and a side entry / exit port E are provided on the left and right sides of the seat to enable entry and exit from both sides. Join the upper part of the tank and the fuel tank,
A turning work vehicle characterized in that an entrance handle is provided at the joining portion. 2. A revolving work vehicle having a protector for protecting a rear side surface portion and an oblique rear portion of a revolving base frame, wherein the protector is divided into a side surface protection protector 7 and an oblique rear surface protection protector 6, and an oblique rear surface protection protector 6 is provided.
A turning work vehicle characterized in that a guard pipe 8 protruding from the side protection protector 7 is extended above the side protection protector 7.