JPH0449656U

JPH0449656U -

Info

Publication number: JPH0449656U
Application number: JP9280190U
Authority: JP
Priority date: 1990-09-04
Filing date: 1990-09-04
Publication date: 1992-04-27

Description

[Brief explanation of the drawing]

第１図および第２図は本考案の実施例を示し、
第１図はエアクリーナを取付けた状態を示す機械
室内の要部縦断面図、第２図はエンジン本体の吸
入空気気圧を示す特性線図、第３図ないし第７図
は従来技術を示し、第３図は油圧シヨベルの斜視
図、第４図はエンジンカバーおよび上カバーを取
外した状態を示す機械室およびカウンタウエイト
の部分平面図、第５図は第４図中の矢示Ｖ−Ｖ方
向からみた断面図、第６図は第５図中の矢示−
方向断面図、第７図はエンジン本体の吸入空気
圧を示す特性線図である。２……上部旋回体（作業機本体）、５……機械
室、１９……エンジン本体、１９Ａ……空気吸入
口、２１……配管、２２……エアクリーナ、２３
Ａ……外気導入口、３１……弾性管、３２……保
護カバー（カバ−）、３２Ａ……開口部。 1 and 2 show an embodiment of the present invention,
Fig. 1 is a vertical sectional view of the main parts inside the machine room showing the state in which the air cleaner is installed, Fig. 2 is a characteristic diagram showing the intake air pressure of the engine body, Figs. 3 to 7 show the conventional technology, and Fig. Figure 3 is a perspective view of the hydraulic excavator, Figure 4 is a partial plan view of the machine room and counterweight with the engine cover and upper cover removed, and Figure 5 is a view taken from the direction of arrow V-V in Figure 4. The cross-sectional view shown in Fig. 6 is indicated by the arrow in Fig. 5.
The directional cross-sectional view and FIG. 7 are characteristic diagrams showing the intake air pressure of the engine body. 2... Upper revolving body (work equipment body), 5... Machine room, 19... Engine body, 19A... Air intake port, 21... Piping, 22... Air cleaner, 23
A... Outside air inlet, 31... Elastic tube, 32... Protective cover (cover), 32A... Opening.

Claims

[Scope of utility model registration request]

a working machine main body having a machine room; an engine main body provided in the machine room of the work machine main body and having an air intake port; a work machine main body provided in the machine room to purify air taken into the engine main body; an air cleaner having an outside air intake port opening to the outside; a pipe connecting the air cleaner and the air intake port of the engine main body; In the engine intake system for construction machinery, the outside air inlet of the air cleaner is provided with an elastic tube that is located inside the cover and whose diameter contracts and expands according to the intake cycle of the engine body,
An engine intake device for construction machinery, characterized in that a distal end side of the elastic tube projects downward from an opening of the cover.