Working Machine

Inactive Publication Date: 2013-08-29
HITACHI CONSTR MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0019]According to the invention, the part of the cover member which forms the ceiling part of the engine room located in the vicinity of the operator's cab is made of a face shape part having a shape whose height gradually increases toward the rear of the vehicle body with the vicinity of the lower end portion of the rear window of the operator's cab as the start point during a predetermined distance immediately after the operator's cab so that a space portion corresponding to the aforementioned predetermined distance can be formed between the rear window of the operator's cab and the ceiling part of the engine room. The space portion can reduce such a feeling of oppre

Problems solved by technology

Thus, the height of the engine room tends to increase as the number of device

Method used

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Example

[0030]FIG. 1 is a side view showing a hydraulic excavator formed as a first embodiment of a working machine according to the invention. FIG. 2 is a perspective view showing a revolving upperstructure provided in the hydraulic excavator shown in FIG. 1. FIG. 3 is an enlarged side sectional view of main part of the revolving upperstructure shown in FIG. 2.

[0031]For example, the working machine according to the first embodiment of the invention is made of a hydraulic excavator. As shown in FIG. 1, the hydraulic excavator has: a traveling base 1; a revolving upperstructure 2 which is disposed on the traveling base 1; and a working device 3 which is attached to the revolving upperstructure 2 so as to be rotatable vertically. The working device 3 has: a boom 4 which is attached to the revolving upperstructure 2 so as to be rotatable vertically; a boom cylinder 4a which actuates the boom 4; an arm 5 which is attached to a front end of the boom 4 so as to be rotatable vertically; an arm cyl...

Example

[0050]FIG. 5 is a side sectional view showing main part of a second embodiment of the invention. FIG. 6 is a side sectional view showing main part of a third embodiment of the invention. FIG. 7 is a side sectional view showing main part of a fourth embodiment of the invention.

[0051]For example, a subject of the second embodiment shown in FIG. 5 is the same hydraulic excavator as that in the aforementioned first embodiment. In the second embodiment, the face shape part of the cover member 17 forming the ceiling part of the engine room 9, i.e. the face shape part having a shape whose height gradually increases toward the rear of the vehicle body with the vicinity of the lower end part 16a of the rear window 16 as the start point during a predetermined distance immediately after the operator's cab 7 is made of a concavely curved surface part 37 along the rotational locus 21 virtually drawn. The remaining configuration is the same as that in the first embodiment. The second embodiment c...

Example

[0052]For example, a subject of the third embodiment shown in FIG. 6 is the same hydraulic excavator as that in the aforementioned first embodiment. In the third embodiment, the face shape part of the cover member 17 is made of a convexly curved surface part 38. The remaining configuration is the same as that in the first embodiment. The third embodiment configured thus can obtain the same functions and effects as those in the first embodiment. In the third embodiment, the stiffness of the face shape part of the cover member 17 can be enhanced.

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Abstract

A hydraulic excavator includes: a revolving upperstructure; a working device attached to the revolving upperstructure; an operator's cab which has a rear window and is disposed in a front position of the revolving upperstructure; and an engine room which is disposed in a rear position adjacent to the operator's cab and has a ceiling part made of a cover member. A part of the cover member located near the operator's cab is made of an inclined surface part having a shape whose height gradually increases toward the rear of a vehicle body with the vicinity of a lower end part of the rear window as a start point during a predetermined distance immediately after the operator's cab. The height of the start point of the inclined surface part may be set equal to or lower than the height of the lower end part of the rear window.

Description

TECHNICAL FIELD[0001]The present invention relates to a working machine such as a hydraulic excavator, in which an operator's cab having a rear window and an engine room adjacent to the operator's cab are disposed on a revolving upperstructure.BACKGROUND ART[0002]Because of working environment, etc., a working machine provided with a revolving upperstructure, such as a hydraulic excavator, is restricted by the width of the revolving upperstructure and the size of rearward protrusion of a counter weight disposed at the rear of the revolving upperstructure in order to prevent the slewing radius from coming out of the vehicle width of a traveling base if possible. Accordingly, for example, in the case where a ventilation area of a heat exchanger received in an engine room disposed on the revolving upperstructure is intended to be set large, the height of the engine room needs to be set large. Particularly, it has become recently necessary to install an exhaust gas disposal device or a ...

Claims

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Application Information

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IPC IPC(8): E02F9/08E02F9/16E02F3/30
CPCB62D25/10B62D33/0617E02F9/0833E02F9/16E02F9/163E02F3/30E02F9/0866E02F9/0891E02F9/00E02F9/08
Inventor SHIMIZU, TSUYOSHINAKAMURA, MASAOKUMAGAI, HIROSHI
Owner HITACHI CONSTR MASCH CO LTD
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