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Engineer machine

A technology of construction machinery and prime mover, which is applied to the cooling of mechanical equipment, engine components, and engines, can solve the problems of inability to form heat exchanger chambers, increase the number of parts, and increase the number of working hours, so as to improve cooling efficiency, The effect of improving work efficiency

Active Publication Date: 2007-05-16
NIHON KENKI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Also, according to the construction machinery of each patent document, since only a plurality of heat exchangers are installed in the frame body, it is not possible to form a heat exchanger chamber for circulating cooling air.
Therefore, it is necessary to prepare a separate partition plate from the frame body to form a heat exchanger chamber, which has the problem of increasing the number of parts and man-hours.

Method used

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Embodiment Construction

[0054] Hereinafter, a hydraulic excavator equipped with heat exchangers such as a radiator and an oil cooler will be exemplified as a construction machine according to an embodiment of the present invention, and will be described in detail with reference to the drawings.

[0055] First, FIGS. 1 to 15 show a first embodiment of the present invention. In this first embodiment, an example of application to a hydraulic excavator of a standard specification in which the counterweight protrudes more than the undercarriage will be described.

[0056] In Fig. 1, 1 is a crawler-type hydraulic excavator as a construction machine. The hydraulic excavator 1 consists of a self-propelled lower traveling body 2, an upper rotating body 3 rotatably assembled on the lower traveling body 2, and a set The working device 27 described below is configured on the upper revolving body 3 .

[0057] Reference numeral 4 denotes a revolving frame used as a vehicle body frame constituting the revolving up...

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Abstract

The invention makes the installation exercise simple of the car body frame for the heat exchanger and advances the assembly work efficiency for the construction machine. A single heat exchanger unit (11) is formed through assembling in advance a braced frame body (12) constituting the frame construction and a heat exchanger assembling body (14) composed of a radiator (15) and a oil cooler (16). The heat exchanger unit (11) is made into a structure detachably mounted on the rotating frame (4). Thereby, the heat exchanger unit (11) assembled in advance can be mounted to the rotating frame (4) only through simple screwing down bolt operation and piping operation. Also, because the heat exchanger unit (11) can be assembled at additional broader operation scene different from the fabrication line for the hydraulic excavator (1), thereby, the assembly work efficiency is advanced.

Description

technical field [0001] The present invention relates to construction machines such as hydraulic excavators and wheel loaders, and more particularly to construction machines equipped with heat exchangers such as radiators and oil coolers. Background technique [0002] Generally speaking, a hydraulic excavator as a construction machine is roughly composed of a self-propelled lower traveling body, an upper rotating body rotatably loaded on the lower traveling body, and an upper rotating body rotatably arranged on the front side of the upper rotating body. Working device configuration. [0003] In addition, the upper revolving body is roughly composed of a revolving frame constituting a support structure, a cab provided on the front side of the revolving frame for an operator to board, an engine mounted on the rear side of the revolving frame to drive a hydraulic pump, Rotationally driven cooling fan, heat exchangers such as radiators, oil coolers, and intercoolers installed fa...

Claims

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Application Information

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IPC IPC(8): E02F9/00B60K11/04
CPCB60K11/04B60K11/06E02F9/10F01P11/10
Inventor 津久井洋尽田知宪田中宏树
Owner NIHON KENKI CO LTD
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