Work vehicle

Patent metadata

Field	Value
Publication number	US-9540788-B2
Application number	US-201414903604-A
Country	US
Kind code	B2
Filing date	Jun 18, 2014
Priority date	Aug 9, 2013
Publication date	Jan 10, 2017
Grant date	Jan 10, 2017

Abstract

A work vehicle includes a vehicle body frame, an inverter, and first through fourth brackets. The first bracket extends in the vehicle width direction, and is disposed in front of the inverter. Both ends of the first bracket are supported by the vehicle body frame. The second bracket is fixed to the left part of the inverter, and extends in the vertical direction. The second bracket is fixed to the first bracket. The third bracket is fixed to the right part of the inverter, and extends in the vertical direction. The third bracket is fixed to the first bracket. The fourth bracket is fixed to at least one of the second and third brackets, extends in the longitudinal direction of the vehicle away from the first bracket, and is supported by the vehicle body frame. The shortest sides of the inverter extend in the longitudinal direction of the vehicle.

First claim

The invention claimed is:

1. A work vehicle in which a driving force is generated by an engine and by an electric motor, comprising:
a vehicle body frame;
an inverter having a rectangular parallelepiped shape;
a first bracket extending along a vehicle width direction of the work vehicle;
a second bracket fixed to a left part of the inverter, the second bracket extending vertically;
a third bracket fixed to a right part of the inverter, the third bracket extending vertically; and
a fourth bracket fixed to one of the second bracket and the third bracket, the fourth bracket extending in a longitudinal direction of the work vehicle in a direction away from the first bracket, the fourth bracket being supported by the vehicle body frame;
the second bracket being fixed to the first bracket;
the third bracket being fixed to the first bracket;
both ends of the first bracket being supported by the vehicle body frame; and
a shortest side of the inverter extending along the longitudinal direction of the work vehicle.

2. The work vehicle according to claim 1 , wherein the first bracket is an inverted U-shaped member made from a pipe material.

3. The work vehicle according to claim 2 , further comprising
a first elastic member connected to a lower left end portion of the first bracket; and
a second elastic member connected to a lower right end portion of the first bracket;
a central axis of the first elastic member coinciding with a central axis of the lower left end portion of the first bracket;
a central axis of the second elastic member coinciding with a central axis of the lower right end portion of the first bracket; and
the first bracket being supported by the vehicle body frame via the first elastic member and the second elastic member.

4. The work vehicle according to claim 3 , wherein
a third elastic member is connected to the front end of the fourth bracket; and
the fourth bracket is supported by the vehicle body frame via the third elastic member.

5. The work vehicle according to claim 4 , further comprising
a capacitor elastically supported by the vehicle body frame below the inverter, the vibrational system of the capacitor being different from the vibrational system of the inverter.

6. The work vehicle according to claim 5 , wherein
the inverter and the capacitor are separated from one another in the vertical direction by a gap.

7. The work vehicle according to claim 5 , wherein in a top view, the entirety of the inverter is overlapped over the capacitor.

8. The work vehicle according to claim 7 , wherein the vehicle body frame includes a left member and a right member;
when a first distance in the vehicle width direction between the inverter and the left member is longer than a second distance in the vehicle width direction between the inverter and the right member, the fourth bracket is positioned on the right side of the inverter; and
when the second distance is longer than the first distance, the fourth bracket is positioned on the left side of the inverter.

9. The work vehicle according to claim 8 , wherein
when the first distance in the vehicle width direction between the inverter and the left member is longer than the second distance in the vehicle width direction between the inverter and the right member, a power cable connecting the inverter and the electric motor is disposed on the left side of the inverter; and
when the second distance is longer than the first distance, the power cable is disposed on the right side of the inverter.

10. The work vehicle according to claim 9 , wherein
the first bracket, the second bracket, and the third bracket are integrally formed, and the fourth bracket is attachable to and detachable from either of the second bracket and the third bracket.

11. The work vehicle according to claim 1 , wherein
the vehicle body frame includes a left member and a right member;
when a first distance in the vehicle width direction between the inverter and the left member is longer than a second distance in the vehicle width direction between the inverter and the right member, the fourth bracket is positioned on the right side of the inverter; and
when the second distance is longer than the first distance, the fourth bracket is positioned on the left side of the inverter.

12. The work vehicle according to claim 11 , wherein
when the first distance in the vehicle width direction between the inverter and the left member is longer than the second distance in the vehicle width direction between the inverter and the right member, a power cable connecting the inverter and the electric motor is disposed on the left side of the inverter; and
when the second distance is longer than the first distance, the power cable is disposed on the right side of the inverter.

13. The work vehicle according to claim 1 , wherein
the first bracket, the second bracket, and the third bracket are integrally formed, and the fourth bracket is attachable to and detachable from either of the second bracket and the third bracket.

14. The work vehicle according to claim 1 , further comprising
an additional fourth bracket fixed to the other of the second bracket and the third bracket.

Assignees

• Komatsu Mfg Co Ltd

Inventors

• Naito Makoto

Classifications

• E02F9/0858 Primary

  Arrangement of component parts installed on superstructures not otherwise provided for, e.g. electric components, fenders, air-conditioning units (E02F9/16, E02F9/18 take precedence) · CPC title

• B60L3/003

  relating to inverters · CPC title

• B60K1/00

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

• B60Y2400/61

  Arrangements of controllers for electric machines, e.g. inverters · CPC title

• B60L2200/40

  Working vehicles · CPC title