Work vehicle having engine and hydraulic stepless speed changing device

Patent metadata

Field	Value
Publication number	US-9764761-B2
Application number	US-201615019267-A
Country	US
Kind code	B2
Filing date	Feb 9, 2016
Priority date	Feb 9, 2016
Publication date	Sep 19, 2017
Grant date	Sep 19, 2017

Abstract

A work vehicle includes a driver's seat supported to a frame unit, a first hydraulic stepless speed changing device transmitting power to a first drive wheel, a second hydraulic stepless speed changing device transmitting power to a second drive wheel, and an oil tank. A bridge beam extending in a vehicle body transverse direction is provided between a cable harness extending in the vehicle body transverse direction and a hydraulic passage connecting the second hydraulic stepless speed changing device to the oil tank.

First claim

The invention claimed is:

1. A work vehicle comprising:
a frame unit extending along a vehicle body front-rear direction;
a first drive wheel mounted to the frame unit on one side in a vehicle body transverse direction;
a second drive wheel mounted to the frame unit on the other side in the vehicle body transverse direction;
a driver's seat supported to the frame unit;
a first hydraulic stepless speed changing device mounted to the frame unit on one side in the vehicle body transverse direction and configured to transmit power to the first drive wheel;
a second hydraulic stepless speed changing device mounted to the frame unit on the other side in the vehicle body transverse direction and configured to transmit power to the second drive wheel;
an engine mounted to the frame unit rearwardly of the driver's seat;
a battery mounted to the frame unit rearwardly of the driver's seat;
a fuel tank mounted to the frame unit downwardly of the driver's seat;
a hydraulic stepless speed changing device oil tank mounted to the frame unit on one side in the vehicle body transverse direction;
a first hydraulic passage connecting the hydraulic stepless speed changing device oil tank to the first hydraulic stepless speed changing device;
a second hydraulic passage extending from one side to the other side of the frame unit in the vehicle body transverse direction, thus connecting the hydraulic stepless speed changing device oil tank to the second hydraulic stepless speed changing device;
a cable harness extending from one side to the other side of the frame unit in the vehicle body transverse direction along the second hydraulic passage; and
a bridge beam extending from one side to the other side of the frame unit in the vehicle body transverse direction between the second hydraulic passage and an electric wiring.

2. The work vehicle according to claim 1 , wherein:
the frame unit includes a first longitudinal frame and a second longitudinal frame that are connected to each other via a plurality of cross beams;
the work vehicle further comprises a ROPS including a first leg portion supported to the first longitudinal frame, a second leg portion supported to the second longitudinal frame, and an arch-shaped portion connecting the first leg portion to the second leg portion.

3. The work vehicle according to claim 2 , wherein the bridge beam connects the first leg portion to the second leg portion.

4. The work vehicle according to claim 2 , wherein the bridge beam comprises one of the plurality of cross beams.

5. The work vehicle according to claim 1 , wherein the bridge beam includes a plate portion having a front face oriented to the front side in the vehicle body front-rear direction and a rear face oriented to the rear side in the vehicle body front-rear direction, the cable harness being retained to the front face or the rear face, the second hydraulic passage being retained to the rear face or the front face.

6. The work vehicle according to claim 1 , wherein an oil supply cylinder communicated to the fuel tank is disposed on the other side of the frame unit in the vehicle body transverse direction, and an oil supply opening of the oil supply cylinder is disposed laterally of the driver's seat.

7. The work vehicle according to claim 6 , wherein the engine and the battery are disposed side by side in the vehicle body transverse direction.

8. The work vehicle according to claim 7 , wherein a canister is disposed on the side opposite the battery across the engine.

9. The work vehicle according to claim 1 , wherein a mower unit having at least one blade rotatably driven by power from the engine is mounted to the frame unit to be liftable up/down.

Assignees

• Kubota Kk

Inventors

• Yamada Masahiro
• Jordan Barry
• Spitz David

Classifications

• B60K17/10

  of fluid gearing · CPC title

• F16H47/00

  Combinations of mechanical gearing with fluid clutches or fluid gearing · CPC title

• B62D11/18 Primary

  the additional power supply being supplied hydraulically · CPC title

• B60Y2200/223

  Ridable lawn mowers · CPC title

• A01D34/54

  Cutting-height adjustment · CPC title