construction machinery

Abstract

The present invention provides an engineering machinery. The engineering machinery comprises an upper revolution body having an upper frame, a driving room and an engine room; wherein the engine room is provided with an engine therein, a fluid pump arranged at a left or right side, a heat exchanger arranged at the opposite side of the fluid pump, and a fan used for cooling the heat exchanger; the driving room is arranged in front of the engine room and arranged at the same side of the fluid pump in a left-right direction, an equipment space is arranged at the opposite side of the driving room, the equipment space is provided with an operating oil tank and an air filter therein; the operating oil tank is arranged at a rear part of the equipment space and arranged at the innermost part in a width direction and is adjacent to the driving room; the air filter is arranged closer to an outer side than the operating oil tank in the width direction, and is connected with the engine by utilizing an air suction pipe across the equipment space and the engine room. Therefore, the air filter can be arranged without causing complication of a piping structure and cost raise.

Description

technical field [0001] The present invention relates to a construction machine such as an excavator including an upper revolving body having an upper frame and an air cleaner. Background technique [0002] by Figure 5 An excavator is shown as an example to illustrate the background of the invention. This excavator includes a crawler-type undercarriage 1 , an upper revolving body 2 rotatably mounted on the undercarriage 1 , and a work attachment 3 attached to the upper revolving body 2 . The working attachment 3 includes a boom 4 , an arm 5 , a bucket 6 and hydraulic cylinders 7 , 8 , 9 , ie, hydraulic actuators, for operating them respectively. The excavator further includes: a hydraulic pump that supplies working oil to a plurality of hydraulic actuators including the hydraulic cylinders 7 to 9 to drive the hydraulic actuators; and a control valve located at the hydraulic pump Between the hydraulic actuators, the working oil is guided to the hydraulic actuators. [0003...

AI Technical Summary

Problems solved by technology

[0011] In order to solve the above problem, it is conceivable to install the air cleaner 28 outside the engine room 13, for example, in the equipment space S1. However, it is difficult to relocate the air cleaner 28 to the equipment space S1 for the following reasons.

That is, in construction machinery, especially a small excavator called a miniature excavator, since the overall upper frame is small, the width dimension of the cab 11 accounts for a relatively large proportion of the upper frame 10, and the width of the equipment space S1 is relatively large. The size is correspondingly reduced and its front-to-back dimension is also limited, so it is difficult to reserve the remaining space in the device space S1

In addition, since the hydraulic oil tank 25 needs to be connected to the hydraulic pump 20 through the suction pipe 27, and the air cleaner 28 needs to be connected to the engine 14 through the suction pipe 29, depending on the layout, each pipe will become longer, resulting in a complicated piping structure. and rising costs

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