Battery powered forklift

Patent metadata

Field	Value
Publication number	US-9376298-B2
Application number	US-201313990520-A
Country	US
Kind code	B2
Filing date	Jan 8, 2013
Priority date	Jan 8, 2013
Publication date	Jun 28, 2016
Grant date	Jun 28, 2016

Abstract

A forklift including a fork on a front of a body to which front and rear wheels are attached, a counter weight on a rear of the body, and a driving electric motor allowing the body to travel, the forklift includes: a battery on the body above the rear wheel; a cargo-handling electric motor generating oil pressure on operating oil operating the fork; a controller controlling the cargo-handling electric motor and the driving electric motor; and a storage space in the body, below a bottom of the battery, and above a bottom of the body, wherein the controller and a charging device charging the battery are arranged in the storage space on both sides in a widthwise direction of the body, respectively and an operating oil tank and the cargo-handling electric motor are arranged along a longitudinal direction of the body between the controller and the charging device.

First claim

The invention claimed is:

1. A battery powered forklift including a fork mounted on a front of a body to which a front wheel and a rear wheel are attached, a counter weight provided on a rear of the body, and a driving electric motor that allows the body to travel, the forklift comprising:
a battery mounted on the body above the rear wheel;
a cargo-handling electric motor configured to generate oil pressure on operating oil that operates the fork;
an operating oil tank that holds the operating oil;
a control device configured to control the cargo-handling electric motor and the driving electric motor;
a charging device for charging the battery; and
a storage space formed in the body, below a bottom of the battery, and above a bottom of the body,
wherein
the control device and the charging device are arranged in the storage space on both lateral sides of the body in a widthwise direction, respectively, and
the operating oil tank and the cargo-handling electric motor are arranged in the storage space on a position overlapped with a virtual straight line extending in a longitudinal direction on a center in the widthwise direction of the body and laterally between the control device and the charging device in the widthwise direction so as to prevent a mass unbalance between the lateral sides of the body, wherein the operating oil tank is arranged anterior to the cargo-handling, electric motor on the body.

2. The battery powered forklift according to claim 1 , further comprising a fan, wherein
the storage space includes an opening on a front of the storage space and
the fan includes at least one fan on each side of the body in the widthwise direction.

Assignees

• Komatsu Mfg Co Ltd

Inventors

• Nakazawa Norikazu
• Nishiyama Kouji

Classifications

• B60K11/08

  Air inlets for cooling; Shutters or blinds therefor · CPC title

• B66F9/07572

  Propulsion arrangements · CPC title

• B60K1/04

  of the electric storage means for propulsion · CPC title

• B66F9/07595

  Cooling arrangements for device or operator · CPC title

• B66F9/07531

  Battery compartments · CPC title