JPH0169145U

JPH0169145U -

Info

Publication number: JPH0169145U
Application number: JP1987166068U
Authority: JP
Priority date: 1987-10-28
Filing date: 1987-10-28
Publication date: 1989-05-08

Description

[Brief explanation of the drawing]

第１図は本考案の実施例にかかるエンジン制御
装置の構成を示す図、第２図は同装置におけるガ
バナレバーの位置調節用エアシリンダの拡大断面
図、第３図は同シリンダ伸長状態の第２図相当図
、第４図は従来装置の構成を示す第１図相当図で
ある。２１……エンジン、２３……ガバナレバー、２
５……リンク部材、２６……リンク部材駆動用の
エアシリンダ、２８……同シリンダのピストンロ
ツド、３２……第１ピストン、３３……第２ピス
トン、３４……リターンスプリング、２９……ピ
ストン位置規制手段を構成するピストンロツドの
段部、３０……同カラー、３１……同ナツト、３
５……ストツパ手段としてのスリーブ、３７……
縮小側空気室、３８……伸長側空気室、４１……
空気圧供給源としてのエアタンク、４２……縮小
側空気圧供給ライン、４３……伸長側空気圧供給
ライン、４４，４５……ライン開閉手段としての
開閉弁。 Fig. 1 is a diagram showing the configuration of an engine control device according to an embodiment of the present invention, Fig. 2 is an enlarged sectional view of an air cylinder for adjusting the position of a governor lever in the same device, and Fig. 3 is a second view of the air cylinder in an extended state. FIG. 4 is a diagram equivalent to FIG. 1 showing the configuration of a conventional device. 21...Engine, 23...Governor lever, 2
5... Link member, 26... Air cylinder for driving the link member, 28... Piston rod of the same cylinder, 32... First piston, 33... Second piston, 34... Return spring, 29... Piston position Stepped portion of piston rod constituting regulating means, 30...same collar, 31...same nut, 3
5... Sleeve as a stopper means, 37...
Reduction side air chamber, 38... Extension side air chamber, 41...
Air tank as an air pressure supply source, 42... Reduction side air pressure supply line, 43... Extension side air pressure supply line, 44, 45... Opening/closing valve as line opening/closing means.

Claims

[Scope of utility model registration request]

In the above-mentioned wheel crane, the engine governor lever is configured to operate between the maximum rotation speed position where the engine rotation speed is the highest and the minimum rotation speed position where the engine rotation speed is the lowest by operating the accelerator pedal. A link member that regulates the maximum rotational speed position of the governor lever in three stages, and a link member that operates between the three states of extended, intermediate, and contracted to move the link member between three positions corresponding to the three positions of the governor lever. an air cylinder that
An air pressure supply source for this air cylinder, an extension side air pressure supply line that connects this air pressure supply source and the extension side air chamber of the air cylinder, and a contraction side air pressure supply line that connects the air pressure supply source and the contraction side air chamber of the cylinder. and a line opening/closing means for opening and closing both of these air pressure supply lines, and the air cylinder has a piston rod connected to the link member, and the air cylinder is configured to move in the cylinder contraction direction by the air pressure in the contraction side air chamber. a first piston provided on the piston rod so as to be movable in the axial direction;
a second piston that faces the first piston and is movable in the axial direction on the piston rod so as to be moved in the cylinder extension direction by air pressure in the extension side air chamber; and a piston that regulates the amount of movement of both pistons relative to the piston rod. a regulating means, a return spring provided between the two pistons so as to counteract the air pressure in both the expansion side and contraction side air chambers, and a stopper for preventing movement of the first piston in the cylinder expansion direction in the intermediate state. An engine control device for a wheel crane, comprising means.