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Electric construction machine

A construction machinery and electric technology, applied in electric power units, motor vehicles, power units, etc., can solve the problems of reduced work efficiency and narrow installation location of battery devices, and achieve the effects of improved work efficiency, easy maintenance, and easy exchange.

Active Publication Date: 2013-02-27
NIHON KENKI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the battery device is directly inspected with the battery device mounted on the machine, due to the narrow installation position of the battery device, appropriate inspection cannot be efficiently performed.
In addition, when the battery unit is taken out at the work site, it takes a considerable amount of time, similarly to the replacement of the battery unit, resulting in a significant drop in work efficiency.

Method used

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Embodiment Construction

[0072] Hereinafter, an embodiment of an electric construction machine according to the present invention will be described in detail with reference to the drawings, taking an example in which the present invention is applied to a hydraulic excavator.

[0073] figure 1 It is a perspective view showing the appearance of the electric hydraulic excavator in this embodiment.

[0074] figure 1 Among them, reference numeral 1 is an electric hydraulic excavator. This hydraulic excavator 1 has: a crawler-type undercarriage 2 capable of self-propelled; Rotating body 3 ; a swing-type working device 4 mounted on the front side of the upper rotating body 3 for excavating sand and soil. The working device 4 is composed of a boom 4A, an arm 4B, a bucket 4C, a boom cylinder 4D, an arm cylinder 4E, a bucket cylinder 4F, and the like.

[0075] Figure 24 It is a figure which shows the drive and cooling system which the hydraulic excavator 1 has.

[0076] The hydraulic excavator 1 has: a hy...

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Abstract

In the disclosed electric construction machine, the replacement of a battery device can be easily and promptly performed, and in response to progress in battery technology, the easy replacement with a different kind of battery device is possible. An upper revolving body (3) is configured from a vehicle main body (100) and a vehicle rear section (200); the battery device (31) is mounted to the vehicle rear section (200); the vehicle rear section (200) is attached using bolts to the vehicle frame (101) of the vehicle main body (100) and is configured in a manner so as to be detachable. A main frame (120) extends jutting in the front / back direction to the bottom side of the vehicle rear section (200). The vehicle rear section (200) has: a rear section frame (201) that is mounted on the main frame (120) and is affixed using bolts; and a rear section cover (205) that covers the rear section frame (201) and has a shape that forms a battery chamber (204) and mimics a counterweight.

Description

technical field [0001] The present invention relates to electric construction machines such as hydraulic excavators and wheel loaders that use electric motors as power sources and can operate with battery devices and commercial power sources. Background technique [0002] Generally, a construction machine such as a hydraulic excavator used in excavation work or demolition work is configured such that a hydraulic pump is driven by a diesel engine, thereby supplying power to a hydraulic motor for travel, a hydraulic motor for swing, and various components constituting the work equipment. Hydraulic actuators such as hydraulic cylinders are supplied with pressure oil (working oil) for operation. [0003] On the other hand, in recent years, in response to the movement towards a low-carbon society, an electric hydraulic excavator has been proposed that includes an electric motor that replaces an engine as a power source for driving a hydraulic pump, and a battery that supplies pow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02F9/00E02F9/08
CPCB60K2001/0477E02F9/226B60K2001/0416E02F9/0808E02F9/0858E02F9/207B60Y2200/412B60K1/04E02F9/0866E02F9/00E02F9/08
Inventor 野口章汤上诚之
Owner NIHON KENKI CO LTD
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