JPS61145783U

JPS61145783U -

Info

Publication number: JPS61145783U
Application number: JP2720185U
Authority: JP
Priority date: 1985-02-28
Filing date: 1985-02-28
Publication date: 1986-09-08

Description

[Brief explanation of the drawing]

第１図はクレーンの側面図、第２図は本考案一
実施例の構成説明図、第３図は制御回路の構成説
明図である。１８は前左側パイロツトチエツク弁、１９は前
右側パイロツトチエツク弁、２０は後左側パイロ
ツトチエツク弁、２１は後右側パイロツトチエツ
ク弁、２２は前側サスロツクパイロツト弁、２３
は後側サスロツクパイロツト弁、Ａは制御回路。 FIG. 1 is a side view of a crane, FIG. 2 is an explanatory diagram of the configuration of an embodiment of the present invention, and FIG. 3 is an explanatory diagram of the configuration of a control circuit. 18 is a front left pilot check valve, 19 is a front right pilot check valve, 20 is a rear left pilot check valve, 21 is a rear right pilot check valve, 22 is a front suspension lock pilot valve, 23
is the rear suspension lock pilot valve, and A is the control circuit.

Claims

[Scope of utility model registration request]

A front left pilot check valve 18 is provided in the head side and rod side conduits of the front left suspension lock cylinder 1, and a front right pilot check valve is provided in the head and rod side conduits of the front right suspension lock cylinder 2. The valve 19 is provided in the head side and rod side conduit of the rear left suspension lock cylinder 3.The rear left pilot check valve 20 is provided in the head side and rod side conduit of the rear right suspension lock cylinder 4. A front suspension lock pilot valve 22 that opens and closes the rear right pilot check valve 21, the front left and right pilot check valves 18 and 19, and the rear suspension lock that opens and closes the rear left and right pilot check valves 20 and 21. It is equipped with a pilot valve 23 and a control circuit A that determines the rolling state during turning based on the detection signal of the sensor and switches and operates the front and rear suspension lock pilot valves 22 and 23 when it is determined that rolling prevention is necessary. A unique crane suspension lock device.