Working machine

Patent metadata

Field	Value
Publication number	US-10260213-B2
Application number	US-201715794468-A
Country	US
Kind code	B2
Filing date	Oct 26, 2017
Priority date	Sep 30, 2014
Publication date	Apr 16, 2019
Grant date	Apr 16, 2019

Abstract

A working machine includes a travel device, a motive power transmission device configured to transmit a motive power to the travel device, a transmission case configured to house the motive power transmission device, and a hydraulic operation fluid tank disposed on an upper surface of the transmission case.

First claim

What is claimed is:

1. A working machine comprising:
an operator seat disposed on a machine body;
a floor step disposed below and anteriorly to the operator seat;
a first operation lever disposed to right of the operator seat;
a second operation lever disposed to left of the operator seat;
a first cover arranged below the operator seat and above the floor step and attached to the machine body;
a hinge disposed on a front end of the first cover;
a second cover extending downward from the first cover toward the floor step, the second cover being jointed to the hinge and attached to the machine body;
each of the first operation lever and the second operation lever comprising:
a portion positioned above the first cover; and
another portion positioned below the first cover.

2. The working machine according to claim 1 , wherein:
the second cover separates a space where the floor step is arranged from a space disposed below the operator seat and below the first cover.

3. The working machine according to claim 1 , wherein:
at least one of the first cover and the second cover comprises:
a first plate and a second plate; and
a plate shape forming a space for housing air between the first plate and the second plate.

4. The working machine according to claim 1 , wherein:
the hinge is formed of a portion connected to the first cover and the second cover, the portion having a thickness thinner than thicknesses of the first cover and the second cover.

5. The working machine according to claim 1 , wherein:
the first cover comprise a first main cover portion, the operator seat being arranged on the first main over portion; and
the first main cover portion comprises:
an upper wall; and
a lower wall arranged below the upper wall and spaced from the upper wall, the upper wall and the lower wall being connected at right portions, left portions, front portions, and rear portions of the upper wall and the lower wall to each other;

the first main cover portion having a plate shape forming a space for housing air between the upper wall and the lower wall.

6. The working machine according to claim 5 , wherein:
the second cover comprises a second main cover portion extending downward from a front portion of the first main cover portion along a vertical direction;
the second main cover portion comprises:
a front wall; and
a rear wall arranged behind the front wall and spaced from the front wall, the front wall and the rear wall being connected at right portions, left portions, front portions, and rear portions of the front wall and the rear wall to each other;

the second main cover portion having a plate shape forming a space for housing air between the front wall and the rear wall; and
an upper end of the second main cover portion being connected by the hinge to a front end of the first main cover portion.

7. The working machine according to claim 6 , wherein:
the first cover further comprises:
a first extending portion having a plate shape, the first extending portion protruding rightward from the first main cover portion and being attached to the machine body; and
a second extending portion having a plate shape, the second extending portion protruding leftward from the first main cover portion and being attached to the machine body;

the second cover further comprises:
a first attachment portion having a plate shape, the first attachment portion being provided on a right side of the second main cover portion and being attached to the machine body; and
a second attachment portion having a plate shape, the second attachment portion being provided on a left side of the second main cover portion and being attached to the machine body.

8. The working machine according to claim 7 , wherein:
the first extending portion comprises:
an edge portion forming a first through hole, the first operation lever being inserted through the first through hole from an upper end of the first operation lever; and

the second extending portion comprises:
an edge portion forming a second through hole, the second operation lever being inserted through the second through hole from an upper end of the second operation lever.

9. A working machine comprising:
a machine body;
an actuator;
a control valve to control a hydraulic operation fluid, the hydraulic operation fluid being used for operating the actuator;
a support base disposed on a front side of the machine body; and
a pedal disposed to left and another pedal disposed to right each configured to operate the control valve;
the support base comprising:
an attachment portion disposed to left and another attachment portion disposed to right each attached to a bottom portion of the machine body, the attachment portions being arranged being separated from each other in a machine width direction;
a leg portion disposed to left standing upward from the attachment portion disposed to left;
another leg portion disposed to right standing upward from the attachment portion disposed to right;
a mount portion configured to mount the control valve, the mount portion being connected to an upper end of the attachment portion disposed to left and to an upper end of the attachment portion disposed to right;
a pedal attachment portion disposed to left to which the pedal disposed to left is attached, the pedal attachment portion being disposed above the attachment portion disposed to left; and
a pedal attachment portion disposed to right to which the pedal disposed to right is attached, the pedal attachment portion being disposed above the attachment portion disposed to right; and

the control valve being arranged between the pedal attachment portion disposed to left and the pedal attachment portion disposed to right in a machine width direction and below the pedal attachment portion disposed to left and the pedal attachment portion disposed to right.

10. The working machine according to claim 9 , wherein:
the support base further comprising:
a support bracket disposed to left fixed to the attachment portion disposed to left;
another support bracket disposed to right fixed to the attachment portion disposed to right;
a foot step disposed to left fixed to the support bracket disposed to left; and
another foot step disposed to right fixed to the support bracket disposed to right;
the pedal attachment portion disposed to left being provided on the foot step disposed to left;
the pedal attachment portion disposed to right being provided on the foot step disposed to right.

11. The working machine according to claim 9 , further comprising:
a support shaft having an axis extending along the machine width direction;
a first cylindrical member and a second cylindrical member configured to turn about the axis of the support shaft;
the first cylindrical member being arranged below the pedal disposed to right and linked with the pedal disposed to right;
the second cylindrical member being arranged below the pedal disposed to left and linked with the pedal disposed to left; and
a link jointing the control valve to the first cylindrical member and the second cylindrical member.

12. The working machine according to claim 9 , further comprising:
an operator seat mounted on the machine body; and
a floor step disposed in front of the operator seat, the floor step comprising:
a foot step disposed to left;
another foot step disposed to right; and
a center step arranged between the foot step disposed to left and the foot step disposed to right;

the mount portion of the support base being disposed below the center step.

13. The working machine according to claim 9 , further com

Assignees

• Kubota Kk

Inventors

• Sumiyoshi Ryohei
• Imai Hideo
• Kubo Noriyoshi
• Anami Hiroyuki
• Hata Hiroyuki
• Yasuda Toyoaki
• Kuroda Masahiro
• Higashiyama Kohei
• Yamashita Yuji
• Tajima Satoshi
• Mori Shunichiro
• Ido Hayato
• Takemura Toshihiko
• Hisatake Shinsuke
• Tamaki Hajime
• Koyamatsu Hiroshi

Classifications

• E02F3/422

  Drive systems for bucket-arms, front-end loaders, dumpers or the like · CPC title

• B60K5/1208

  Resilient supports (B60K5/1241 - B60K5/1291 take precedence) · CPC title

• B60K5/00

  Arrangement or mounting of internal-combustion or jet-propulsion units (B60K7/00 takes precedence; arrangement or mounting of plural diverse prime-movers for mutual or common propulsion B60K6/00) · CPC title

• E02F9/0808

  Improving mounting or assembling, e.g. frame elements, disposition of all the components on the superstructures (for disposition of specific components, E02F9/0858) · CPC title

• E02F9/0883

  Tanks, e.g. oil tank, urea tank, fuel tank (for vehicles in general B60K15/00) · CPC title