JPH0687455U - Power shovel revolving frame - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a revolving frame for a power shovel, which has high rigidity and is easy to assemble. In a power shovel in which a revolving frame including a frame body 1, a fender 1a and a counterweight 4 is rotatably provided on a lower traveling body, the frame body 1, the fender 1a, the counterweight 4 and a hydraulic oil tank 3 are cast. With this structure, it is possible to obtain higher rigidity as compared with a structure composed of a plurality of parts, and it is not necessary to assemble the parts.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a revolving frame for a power shovel.

[0002]

[Prior art]

 Conventionally, a power shovel has a revolving frame mounted on the undercarriage so that it can rotate freely, and the revolving frame is equipped with a working machine and a driver's seat. As shown in FIG. 1, the conventional revolving frame includes a frame body a, left and right fenders b provided on both sides of the frame body a, a counterweight c provided at a rear portion of the frame body a, and a frame body a. It is composed of a hydraulic oil tank d, etc. mounted on the vehicle, and these parts are individually manufactured and then assembled to form a revolving frame.

[0003]

[Problems to be solved by the device]

 Since the conventional revolving frame is constructed by assembling multiple parts, it is necessary to reinforce each other in order to obtain high rigidity. Since it is large, there is a problem that it cannot be sufficiently strengthened. Further, when assembling each part, the appearance is impaired if there is a gap between the parts, so that it takes a lot of man-hours to manage the gap and there is a problem that the assemblability is poor. The present invention has been made in order to solve such a problem, and an object thereof is to provide a revolving frame for a power shovel having high rigidity and good assembling.

[0004]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides a power shovel in which a revolving frame composed of a frame body, a fader, and a counterweight is rotatably provided on a lower traveling body, and the frame body, the fender, the counterweight, and hydraulic oil are used. The tank is integrally formed by casting.

[0005]

[Action]

 With the above configuration, the rigidity can be increased without reinforcing the parts as compared with the case where the parts are composed of a plurality of parts, and the assembling property is improved because the clearance management between the parts is not required.

[0006]

【Example】

 An embodiment of the present invention will be described in detail with reference to the drawings shown in FIGS. In these figures, reference numeral 1 denotes a frame body, which has a substantially cylindrical shape around which a fender 1a is formed, and is wholly integrally formed by casting. On the upper surface of the frame body 1, a bracket 2 for mounting a working machine (not shown) is provided in a protruding manner on the front part on the left side, and a flat hydraulic oil tank whose upper surface is open on the right side. 3 is formed, and the upper surface of the hydraulic oil tank 3 is liquid-tightly closed by a cover (not shown).

Further, a counterweight 4 having a weight sufficient to meet the working machine capacity is formed integrally with the frame body 1 at the rear of the frame body 1. An operating lever (both not shown) for operating a driver's seat and a working machine is provided on a floor plate attached to the upper surface of the frame body 1.

[0008]

[Effect of device]

 As described in detail above, this invention forms the revolving frame by integrally forming the frame body, the fender, the hydraulic oil tank, and the counterweight. Therefore, a plurality of conventional parts are assembled to form the revolving frame. Compared with the above, since the rigidity can be increased without requiring reinforcement between parts, it can be easily implemented especially for a micro power shovel. In addition, since it is not necessary to assemble the parts while managing the gaps between the parts, the assemblability is significantly improved, and it is possible to provide the parts at a lower cost than when the parts are manufactured separately.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a revolving frame of a conventional power shovel.

FIG. 2 is a perspective view showing a revolving frame of a power shovel according to an embodiment of the present invention.

FIG. 3 is a view from the direction A in FIG.

[Explanation of symbols]

 1 Frame body 1a Fender 3 Hydraulic oil tank 4 Counterweight

Claims (1)

[Scope of utility model registration request] 1. A power shovel in which a revolving frame including a frame body 1, a fender 1a, and a counterweight 4 is rotatably provided on a lower traveling body, wherein the frame body 1, the fender 1a, and the counterweight 4 are provided.
Also, a revolving frame of a power shovel in which the hydraulic oil tank 3 is integrally formed by casting.