Cab of construction machinery

A technology for construction machinery and driver's cab, applied in the direction of earth mover/shovel, motor vehicle, construction, etc., can solve problems such as damage of driver's cab, and achieve the effect of reducing weight, ensuring strength, and sufficient strength

Active Publication Date: 2005-12-28
NIHON KENKI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, in this case, since it is only a structure in which a cab for a construction machine constituting a skeleton structure is assembled by connecting a plurality of pipes to each other using joints, a large external

Method used

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  • Cab of construction machinery
  • Cab of construction machinery
  • Cab of construction machinery

Examples

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Embodiment Construction

[0047] Hereinafter, embodiments of the present invention will be described with reference to the drawings, taking a case where a construction machine cab is applied to a hydraulic excavator as an example.

[0048] here, Figure 1 to Figure 10 It is the first embodiment of the present invention. In the figure, 1 is a hydraulic excavator as a construction machine. This hydraulic excavator 1 is roughly composed of a lower traveling body 2, an upper rotating body 4 rotatably mounted on the lower traveling body using rotating wheels 3, and a working device described later. 8 composition.

[0049] In addition, the upper slewing body 4 is generally provided on the revolving frame by the revolving frame 5, the driver's cab 11 described later mounted on the front left side of the revolving frame 5 when viewed from the rear of the vehicle, and the rear side of the driver's cab 11. The exterior cover body 6 on 5, the counterweight 7 that is installed on the rear end portion of rotating...

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PUM

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Abstract

PROBLEM TO BE SOLVED: To protect an operator inside a cab with a sufficient rigidity by suppressing the deformation of a rear space in the cab when a vehicle is turned over.

SOLUTION: Left and right upper pillars 27 and 28 positioned on the ceiling side of a cab frame 12 are formed of left and right upper extension members 29 and 30 installed extendedly from the upper end side to the rear side of the left and right front pillars 22 and 23 and left and right connection members 31 and 32 connecting the rear end sides of the upper extension members 29 and 30 to the upper end sides of left and right rear pillars 24 and 25. Left and right connection members 31 and 32 are formed in solid beam members by a casting or forging means. Also, beam members 33 and 34 apart a distance in the longitudinal direction and extending in the lateral direction and having both ends joined to the connection members 31 and 32 by welding are installed between the connection members 31 and 32.

COPYRIGHT: (C)2006,JPO&NCIPI

Description

technical field [0001] The present invention relates to a construction machine operator's cab suitable for forming an operator's cabin of, for example, a hydraulic excavator, a hydraulic crane, and the like. Background technique [0002] Generally, a construction machine such as a hydraulic excavator has a structure in which a cab is provided on an upper revolving body rotatably mounted on a lower traveling body, and the cab constitutes an operator's cab for boarding and disembarking operators. [0003] Such a prior art cab for a construction machine is formed into a substantially square box shape by the upper part, the front part, the rear part, and the left and right side parts. And, for example, the left and right side parts, etc., have a structure in which inner plates and outer plates made of, for example, steel sheets are joined in a superimposed state to form a space portion constituting a column portion inside (for example, refer to Patent Document 1-Japanese Patent ...

Claims

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Application Information

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IPC IPC(8): E02F9/16
CPCB60Y2200/412E02F9/08E02F9/163
Inventor 饭岛亨小松和则田端聪
Owner NIHON KENKI CO LTD
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