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hydraulic excavator

A hydraulic excavator, engine technology, applied in the direction of earth mover/shovel, mechanical equipment, engine components, etc., can solve the problems of poor rear vision, inability to use processing devices, difficulties, etc., and achieve good maintainability effect

Active Publication Date: 2017-05-24
KOMATSU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] On the other hand, in a small hydraulic excavator with a small counterweight, it is difficult to provide a recess in the counterweight because of the need to ensure the weight of the counterweight, so it is impossible to use such a recess to accommodate the exhaust gas aftertreatment device.
In addition, if the exhaust aftertreatment device is protruded higher than the engine room, rearward visibility will be deteriorated

Method used

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  • hydraulic excavator
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Embodiment Construction

[0027] Hereinafter, an embodiment of the present invention will be described based on the drawings.

[0028] In the following description, the front-back, left-right, and up-down directions refer to the figure 1 In the illustrated state, an operator seated in the cab 5 of the hydraulic excavator 1 faces the front-rear, left-right, and up-down directions in a state facing the front. In addition, the left-right direction has the same meaning as the vehicle width direction of the hydraulic excavator 1 .

[0029] (Summary description of hydraulic excavator)

[0030] The hydraulic excavator 1 according to the present embodiment is a vehicle classified as a small excavator, and includes an undercarriage 2, an upper revolving unit 3 installed on the undercarriage 2, a work machine 4 for excavating soil and sand, and an operator. A cab 5 for riding the hydraulic excavator 1 . In addition, the hydraulic excavator 1 has a tilt-up floor 6, and the cab 5 as a whole can be tilted up and...

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Abstract

A hydraulic excavator (1) is provided with: a lower traveling body (2), an upper rotating body (3) rotatably provided on the lower traveling body (2), and an upward tilting body provided on the upper rotating body (3). The bottom plate (6) and the filter device (10) for purifying the exhaust gas discharged from the engine (7) are provided with an engine room (31). The engine room (31) accommodates the engine (7) and is installed in the engine (7). The cooling unit (8) on the right side to cool the engine (7), the hydraulic pump (9) provided on the left side of the engine (7) and driven by the engine (7), the filter device (10) along the length direction of the vehicle body The filter device (10) is installed above the hydraulic pump (9) in the engine room (31) in the front-rear direction, and the exposed portion of the filter device (10) is detachably mounted in a state where the up-inclined bottom plate (6) is tilted upward. Covered by protective cover (11).

Description

technical field [0001] The present invention relates to hydraulic excavators. Background technique [0002] In order to comply with exhaust gas regulation regulations, construction machines such as hydraulic excavators are known to be equipped with an exhaust after-treatment device that traps particulate matter in exhaust gas discharged from an engine. For example, Patent Document 1 discloses a large hydraulic excavator in which an exhaust aftertreatment device including a diesel particulate filter and a selective reduction catalyst is housed in a concave portion of a counterweight. [0003] On the other hand, in a small hydraulic excavator with a small counterweight, it is difficult to provide a recess in the counterweight because of the need to ensure the weight of the counterweight, so that the exhaust aftertreatment device cannot be accommodated in such a recess. In addition, if the exhaust aftertreatment device is protruded higher than the engine room, rearward visibil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02F9/00F01N3/28
CPCE02F3/325E02F9/0833E02F9/0866E02F9/166F01N3/035F01N2260/20F01N2340/04F01N2590/08
Inventor 佐佐木一成
Owner KOMATSU LTD