Working machine

• US 10,260,213 B2
• Filed: 10/26/2017
• Issued: 04/16/2019
• Est. Priority Date: 09/30/2014
• Status: Active Grant

• Current Assignee: Kubota Corporation
• Original Assignee: Kubota Corporation
• 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
• Primary Examiner(s): Phan, Hau V
• Application Number:
  US15/794,468
• Publication Number:
  US 20180044885A1
• Time in Patent Office: 537 Days
• CPC Class Codes: B60K 17/00 Arrangement or mounting of transmissions in vehicles clutches per se, e.g. construction thereof, F16D; gearing per se, e.g. construction thereof, F16H
• CPC Class Codes: B60K 5/00 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 Class Codes: B60K 5/02 with the engine main axis, e.g. crankshaft axis, substantially in or parallel to the longitudinal centre line of the vehicle
• CPC Class Codes: B60K 5/1208 Resilient supports B60K5/1241 - B60K5/1291 take precedence
• CPC Class Codes: B60K 5/1216 characterised by the location of the supports relative to the motor or to each other B60K5/1225 takes precedence
• CPC Class Codes: B60R 13/0838 for engine compartments
• CPC Class Codes: B60Y 2200/415 Wheel loaders
• CPC Class Codes: B62D 33/063 movable from one position into at least one other position, e.g. tiltable, pivotable about a vertical axis, displaceable from one side of the vehicle to the other
• CPC Class Codes: E02F 3/3414 the arms being pivoted at the rear of the vehicle chassis, e.g. skid steer loader
• CPC Class Codes: E02F 3/422 Drive systems for bucket-arms, front-end loaders, dumpers or the like
• CPC Class Codes: E02F 9/02 Travelling-gear, e.g. associated with slewing gears drives therefor E02F9/20; for motor vehicles B60B, B60G; undercarriages for locomotives or railroad cars B61F; track-laying vehicles B62D; for cranes B66C23/18
• CPC Class Codes: E02F 9/0808 Improving mounting or assembling, e.g. frame elements, disposition of all the components on the superstructures for disposition of specific components, E02F9/0858
• CPC Class Codes: E02F 9/0866 Engine compartment, e.g. heat exchangers, exhaust filters, cooling devices, silencers, mufflers, position of hydraulic pumps in the engine compartment
• CPC Class Codes: E02F 9/0883 Tanks, e.g. oil tank, urea tank, fuel tank for vehicles in general B60K15/00
• CPC Class Codes: E02F 9/0891 Lids or bonnets or doors or details thereof doors for cabins E02F9/163 takes precedence; for motor vehicles B62D25/10
• CPC Class Codes: E02F 9/16 Cabins, platforms, or the like, for drivers for motor vehicles in general B62D33/06, for cranes B66C13/54
• CPC Class Codes: E02F 9/166 movable, tiltable or pivoting, e.g. movable seats, dampening arrangements of cabins seats for vehicles in general B60N2/00

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.

Claims

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 comprising:

a travel device; and

a transmission case to house the motive power transmission device for transmitting a motive power to the travel device, the transmission case being disposed inside the machine body;

the transmission case comprising;

a transmission case disposed to a left portion of the machine body; and

another transmission case disposed to a right portion of the machine body;

the control valve being mounted on the mount portion below the pedals between the transmission case disposed to the left portion and the transmission case disposed to the right portion.

14. The working machine according to claim 9, further comprising:

a cabin mounted on the machine body;

a boom disposed outward from the cabin in a machine outward direction and extending forward from behind the cabin; and

an operation tool disposed on a tip portion of the boom.