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Construction machine

By setting up air flow paths in the electrical component covers of engineering machinery and using the air supply fan cooling system, the problem of damage to electrical components caused by engine heat is solved, effective cooling is achieved, and the reliability of the equipment is improved.

Inactive Publication Date: 2015-08-05
KOBELCO CONSTR MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, an engine is usually disposed under the seat frame, and the hot air generated by the heat of the engine and the temperature rise of the seat frame caused by the hot air may cause damage to electrical components such as the above-mentioned electromechanical controller.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, the following embodiment is an example which actualized this invention, and is not intended to limit the applicable thing of this invention or its use. In each drawing, the directions of up and down, front and rear, and left and right are indicated by arrows. Unless otherwise specified, the description will be made based on the directions indicated by these arrows.

[0016] figure 1 It is a side view showing the construction machine 10 according to the embodiment of the present invention. The construction machinery 10 is a hydraulic excavator with a small rotary type at the rear, which includes: a crawler-type lower walking body 11; an upper rotating body 12 freely rotatable installed on the lower walking body 11; an accessory device 13; 12 on image 3 the engine 28 shown; and the electromechanical controller 40 as an electrical component mounted on the u...

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PUM

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Abstract

Provided is a construction machine including an electrical component (40) and efficiently cooling it. The construction machine includes an upper slewing body having an air intake chamber (16) capable of taking in air, an engine (28), the electrical component (40), an air intake duct (24) guiding the air inside the air intake chamber (16) toward the engine (28), a blow fan (27) directing the air inside the air intake chamber (16) toward the engine (28) through the air intake duct (24), and electrical-component cover (36, 50, 43) covering the electrical component (40). The electrical-component cover (36, 50, 43) defines an air flow path (55) for flowing air along the electrical component (40), between the electrical-component cover (36, 50, 43) and the electrical component (40) thereinside. The electrical-component cover (36, 50, 43) includes an air inlet (51) communicating an upstream portion of the air flow path (55) with the air intake chamber (16) and an air outlet (52) communicating a downstream portion of the air intake chamber (16) with the air intake duct (24).

Description

technical field [0001] The present invention relates to engineering machinery. Background technique [0002] Conventionally, the technology disclosed in Japanese Patent Laid-Open Publication No. 2005-146741 is known as a construction machine having electrical components such as a mechatronics controller. It discloses a hydraulic excavator equipped with electrical components such as electromechanical controllers, which includes an upper slewing body equipped with a cab, the cab is box-shaped including a rear side plate, and a above electrical components. By attaching the electrical components to the rear side panel portion, the operator can access the electrical components from the outside of the cab, and can secure a working space necessary for the access. [0003] However, in a construction machine such as a rear small-slewing type hydraulic excavator, where the installation space of each component is limited, in order to avoid the full length of the electrical wiring con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02F9/00E02F9/20
CPCB66C13/52E02F9/00E02F3/325B60K11/06E02F9/0866E02F9/2095B60Y2200/412B60Y2306/05
Owner KOBELCO CONSTR MASCH CO LTD