JP2004052226A - Tank structure of working machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tank equipped in a working machine which can be enlarged in a large scale while reducing the machine structure in a minimum scale. <P>SOLUTION: The tank (16) to be equipped in the working machine is provided with an enlargement section (16b) and a storage box (20) for articles is detachably mounted on the enlargement section (16b). <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a tank structure of a working machine, and more particularly, to a tank structure capable of increasing the size of a working machine while minimizing its influence on a body structure.
[0002]
[Prior art]
With reference to FIG. 5, a description will be given of an installation portion of a fuel tank in a well-known hydraulic excavator which is a typical example of a working machine. The overall structure of the hydraulic excavator will be described in an embodiment of the invention later.
[0003]
In the upper revolving unit 8 which is the body of the hydraulic excavator, a boom 12 which is a working arm is vertically moved about the pin 26 by a pin 26 between a pair of brackets 10 a and 10 b erected on the revolving frame 10. They are swingably connected. An operator's cab is installed at one end (rear side in FIG. 5) of the pin 26 in the direction of the axis X (a direction perpendicular to the paper surface of FIG. 5), and a revolving body frame is provided at the other end (front side of FIG. 5). A storage box 40 for articles such as tools, a fuel tank 42, and a hydraulic oil tank 18 are installed in this order from the front end (right end in FIG. 5) of FIG.
[0004]
In the case of a hydraulic excavator, it is necessary to attach and detach the boom 12 to and from the upper revolving unit 8, that is, to attach and detach the boom 12 so as not to hinder the production, repair, or particularly during large-sized machines, such as on-site transportation. The pin 26 is inserted and removed in the direction of the axis X. At this time, one end of the fuel tank cannot be inserted into or removed from the cab side in the direction of the axis X. Therefore, a detachable space S for the pin 26 is formed in front of the fuel tank 42 and above the storage box 40.
[0005]
[Problems to be solved by the invention]
In the tank of the work machine, for example, the above-mentioned fuel tank, the fuel tank is large so that it can be operated continuously for a long time without refueling in the middle of the work, or in places where refueling is difficult. It is desired to increase the amount. However, the conventional tank equipped as described above has the following problems to be solved.
[0006]
That is, it is difficult to extend the fuel tank 42 forward (to the right in FIG. 5) to increase the size and increase the size of the fuel tank 42, since it is necessary to secure a space S for attaching and detaching the pins 26 and the storage box 40 is provided. . Extending rearward (to the left in FIG. 5) is that the amount of overhang of the upper revolving structure 8 as the airframe increases and the rearward turning radius, which is required to be small as a function of the hydraulic shovel, increases. It is difficult to extend to.
[0007]
SUMMARY OF THE INVENTION The present invention has been made in view of the above-described circumstances, and a technical problem of the present invention is to increase the size and size of a tank provided in a work machine while minimizing an influence on a body structure.
[0008]
[Means for Solving the Problems]
That is, according to the present invention, as a tank structure that solves the above technical problem, a tank mounted on a work machine has an extended portion, and a storage box for articles is detachably mounted on the extended portion. A tank structure for a working machine is provided.
[0009]
Then, the tank is extended to the portion where the storage box was conventionally installed, the necessary space for attaching and detaching pins is maintained, the storage box is detachably mounted in this space, and the storage box is removed when using the space.
[0010]
In a preferred embodiment, by removing the storage box, a pin attaching / detaching space for rotatably connecting the base of the working arm of the working machine is formed.
[0011]
In addition, a space for attaching and detaching a pin for rotatably connecting the base of the working arm is formed, and at the same time, the size of the tank can be increased and the influence on the body structure can be minimized.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a tank structure of a working machine constituted according to the present invention will be described in more detail with reference to the accompanying drawings illustrating a preferred embodiment of a hydraulic shovel as a typical example of the working machine. In FIGS. 1 to 4, substantially the same parts as those in FIG. 5 are denoted by the same reference numerals.
[0013]
Referring to FIG. 1, a hydraulic excavator generally denoted by reference numeral 2 includes a lower traveling body 6 having a pair of left and right tracks 4, 4 and a turning axis Y extending substantially vertically on the lower traveling body 6. An upper swing body 8 is provided at the center so as to be swingable. In the upper revolving unit 8, the base of a boom 12, which is a working arm, is provided at the center of the revolving unit frame 10 on the front side (right side in FIG. 1), a driver's cab 14 on the left side, and a fuel tank 16 on the right side. A hydraulic oil tank 18 and a storage box 20 for articles such as tools are provided respectively. The revolving unit frame 10 also has an equipment room 22 for accommodating an engine, hydraulic equipment, and the like in the center, and a rear end (left end in FIG. 1) at the rear end of the airframe and an upper part centered on the revolving axis Y. A counter weight 24 that defines a turning radius R of the turning body 8 is attached.
[0014]
1 will be described with reference to FIG. 2 showing the fuel tank 16 of FIG. The base of the boom 12 is rotatably mounted on the axis X by a pin 26 between a pair of brackets 10 a and 10 b erected on the revolving frame 10. A boom operating cylinder 28 for swinging the boom 12 about the pin 26 is mounted between the boom 12 and the revolving frame 10. Although not shown, an arm is attached to the tip of the boom 12, and a working device such as a bucket is attached to the tip of the arm so as to freely swing.
[0015]
The fuel tank 16 is provided on the bracket 10a side, and the cab 14 is provided on the bracket 10b side. The fuel tank 16 has a detachable space S for allowing the pin 26 to be inserted into and removed from the bracket 10a, the boom 12, and the bracket 10b in the direction of the axis X (perpendicular to the plane of FIG. 2). (Right side in FIG. 2). The storage box 20 is detachably attached to the detachable space S.
[0016]
The fuel tank 16 is formed in a substantially L-shape as viewed from the side shown in FIG. 2, and has a rectangular parallelepiped main body portion 16a extending vertically and a rectangular parallelepiped expanded portion integrally extending forward from a lower portion of the main body portion 16a. 16b. The height of the main body 16a from the revolving structure frame 10 to the upper end is formed above the axis X of the pin 26 substantially in the same manner as the conventional fuel tank 42 (FIG. 5). The extension portion 16b is formed to have substantially the same size as the conventional storage box 40 (FIG. 5). The attachment / detachment space S is formed in an L-shaped space sandwiched between a vertical wall V of the main body 16a of the fuel tank 16 and a horizontal wall H of the expansion portion 16b when viewed in the direction in which the axis X of the pin 26 extends.
[0017]
In the present embodiment, the size of the hydraulic oil tank 18 and its installation position are the same as those in the related art. Therefore, the fuel tank 16 is larger and larger than the conventional fuel tank 42 by the expansion portion 16b.
[0018]
The storage box 20 is detachably mounted on the horizontal wall H of the extended portion 16b of the attachment / detachment space S by a suitable means, for example, a plurality of screw holes formed in the horizontal wall H by bolts 30, respectively. Have been.
[0019]
The well-known pin 26 will be described with reference to FIG. 3 together with FIG. The pin 26 has a lever-shaped flange 26b integrally attached to one end of the pin main body 26a. The pin main body 26a is inserted through the bracket 10a, the boom 12, and the bracket 10b from the bracket 10a side of the revolving unit frame 10. A bolt 32 is passed through a bolt hole 26c of the flange 26b, is attached to a screw hole of the bracket 10a, and is fixed to the revolving frame 10.
[0020]
The attachment and detachment of the pin 26 by the attachment / detachment space S provided in the fuel tank 16 will be described with reference to FIGS.
[0021]
(1) Preparation of the removable space:
The storage box 20 mounted on the extended portion 16b of the fuel tank 16 is removed by removing the bolt 30. Thus, the storage box 20 is removed, and a pin mounting / dismounting space S is prepared.
[0022]
(2) Pin removal, boom removal:
In the attachment / detachment space S, the bolt 32 holding the pin 26 to the bracket 10a is removed, and the pin 26 is removed from the bracket 10b, the boom 12, and the bracket 10a. Thus, the connection between the boom 12 and the revolving frame 10 is released, and the boom 12 is removed.
[0023]
(3) Boom installation, storage box installation:
The attachment of the boom 12 to the revolving unit frame 10 is performed in the reverse of the above-described procedure. That is, in a state where the storage box 20 is removed and the pin attaching / detaching space S is prepared, the boom 12 is aligned with the brackets 10a and 10b, the pin 26 is inserted from the attaching / detaching space S side, and the flange 26b of the pin 26 is bolted. 32, it is fixed to the bracket 10a. Thereafter, the storage box 20 is mounted on the extended portion 16b of the fuel tank 16 with the bolt 30.
[0024]
The operation of the tank structure of the working machine as described above with reference to FIGS. 1 and 2 will be described.
[0025]
(1) Minimizing the effect on the airframe structure and making it easier to increase the size of the tank:
An extended portion 16b of the fuel tank 16 is disposed in a portion where the conventional storage box 40 (FIG. 5) is installed, a pin attaching / detaching space S is formed on the extended portion 16b, and an extended portion 16b of the pin attaching / detaching space S is formed. Since the storage box 20 is detachably mounted on the upper part, the size of the fuel tank 16 can be easily increased and minimized by minimizing the influence on the body structure.
[0026]
(2) The dimension to the rear end of the working machine does not increase:
For example, in the hydraulic excavator as the working machine described above, the fuel tank 16 can be expanded forward, so that the dimension up to the rear end of the fuselage and the turning radius R shown in FIG. 1 do not increase.
[0027]
(3) The dimension up to the rear end of the working machine can be reduced:
Further, in the above-described hydraulic excavator as a working machine, if the capacity of the fuel tank 16 is made the same as that of the related art, the expanded portion 16b and the hydraulic oil tank 18 together with the hydraulic oil tank 18 as shown in FIG. (Rightward), the dimension to the rear end of the upper swing body 8 and the turning radius R (FIG. 1) can be reduced by the dimension Z.
[0028]
As described above, the present invention has been described in detail based on the embodiments. However, the present invention is not limited to the above-described embodiments. For example, as described below, various modifications or corrections can be made within the scope of the present invention. Can be done.
[0029]
(1) Tank:
In the embodiment of the present invention, a fuel tank is shown as an embodiment of the tank structure of the working machine, but as the tank, a water tank of a working machine that requires a large amount of water for washing and discharging water, Alternatively, various tanks, such as a hydraulic oil tank of a working machine equipped with many hydraulic actuators, can be increased in size and quantity with minimum influence on the body structure.
[0030]
(2) Removable space:
In the embodiment of the present invention, by removing the storage box above the fuel tank expansion portion, a pin attaching / detaching space was formed. Can also be applied.
[0031]
(3) Working machine:
In the embodiment of the present invention, the example of the tank of the boom mounting portion of the hydraulic shovel as the working machine is shown. The present invention can be applied to tanks of various working machines, such as a tank mounted on a pile driver support.
[0032]
【The invention's effect】
According to the tank structure of the working machine configured according to the present invention, the size of the tank mounted on the working machine can be increased while minimizing the influence on the body structure.
[Brief description of the drawings]
FIG. 1 is a perspective view of a hydraulic shovel as a working machine having a tank structure configured according to the present invention.
FIG. 2 is an enlarged view mainly showing a part of a fuel tank shown in a direction of an arrow A in FIG. 1;
FIG. 3 is an enlarged perspective view of a pin.
FIG. 4 is a view showing that the rear end can be moved forward when the capacity of the fuel tank in FIG.
FIG. 5 is a view showing a conventional tank portion viewed in the same state as FIG. 2;
[Explanation of symbols]
2: Hydraulic excavator (work machine)
12: Boom 16: Fuel tank (tank)
16b: Expansion part 20: Storage box 26: Pin 40: Storage box 42: Fuel tank S: Pin attaching / detaching space X: Axis line

Claims (2)

A tank structure for a working machine, wherein a tank provided in the working machine has an extended portion, and a storage box for articles is detachably mounted on the extended portion. The tank structure for a working machine according to claim 1, wherein a detachable space for a pin for rotatably connecting a base of a working arm of the working machine is formed by removing the storage box.

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