Construction machine

A technology for construction machinery and seating, applied in construction, earthmoving machines/shovels, etc., can solve the problems of narrow auxiliary seating space and difficulty for skilled operators to sit, and achieve the effect of ensuring a wide range of vision

Inactive Publication Date: 2009-06-17
KOMATSU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the construction machine in Document 1 has the following problems: since a dedicated cab for skilled operators is newly added, it is necessary to develop and manufacture such a dedicated cab, which requires development and manufacturing time and development and manufacturing costs.
Although the size of the cab is not changed, the auxiliary seat is installed using the dead zone above the air conditioner installed behind the driver's seat, but the space around the auxiliary seat is narrow, and the skilled operator has to give instructions while being restrained. , and, because the auxiliary seat is set behind the driver's seat, it is difficult for a skilled operator to sit on the auxiliary seat

Method used

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Embodiment Construction

[0020] Hereinafter, embodiments of the present invention will be described based on the drawings.

[0021] figure 1 is an exploded perspective view showing main parts of the cab 1, figure 2 is a horizontal sectional view schematically showing the cab 1, image 3 is a schematic diagram showing the expansion board 20, Figure 4 It is a schematic diagram showing the state when the entrance and exit door 2 is opened. Figure 5 It is a perspective view of the cab 1 viewed from the outside of the entrance. The cab 1 is installed in a construction machine (not shown) such as a wheel loader, a hydraulic excavator, and a bulldozer.

[0022] exist figure 1 , figure 2 Among them, the cab frame 10 of the cab 1 is composed of a main frame 14 including a pair of left and right front pillars 13A (pillars) and a pair of left and right rear pillars 13B (pillars), and a roof plate 11 covering the zenith portion of the main frame 14. 1. A cover plate (デツキパネル) 12 covering the floor porti...

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PUM

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Abstract

The invention relates to a construction machine. A driver seat (3) and an auxiliary seat (4) are set in a driver's cab (1). An access for operator is set between one pair of a front pillar (13A) and a back pillar (13B) of a driver's cab frame (10) forming the driver's cab and an access door is mounted at the access with a expansion space (100). The expansion space (100) expanses from the connection line (A-A) of the lateral surface of the front pillar (13A) and the lateral surface of the back pillar (13B) to one side of the access door. The auxiliary seat (4) is set at one side of the expansion space (100) relative to the driver seat (3).

Description

technical field [0001] The present invention relates to a construction machine, and more specifically, to a construction machine in which a driver's seat and an auxiliary seat (trainer's seat) are provided in a cab of, for example, a wheel loader, a hydraulic excavator, or a bulldozer. Background technique [0002] At present, only a driver's seat for an operator is generally provided in the cab of a construction machine. However, if the operator is a novice, it is necessary to have a skilled operator to guide the new operator, and therefore it is desirable that the skilled operator sit in the cab together. In this manner, it has been proposed to secure a passenger space by adding a separate cab to the side of the existing cab and to provide an auxiliary seat (Document 1: Japanese Patent Application Laid-Open No. 2006-56375). In addition, there is a proposal to provide an auxiliary seat behind the driver's seat in the same cab without adding a new cab (Document 2: Japanese ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02F9/16
Inventor 齐藤芳信
Owner KOMATSU LTD
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