JPS639352U

JPS639352U -

Info

Publication number: JPS639352U
Application number: JP10196186U
Authority: JP
Priority date: 1986-07-02
Filing date: 1986-07-02
Publication date: 1988-01-21

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示す油圧回路図、
第２図は同全体の側面図、第３図は同指令器の配
置図、第４図は同要部拡大図、第５図は同駆動回
路図、第６図は別の実施例を示す駆動回路図であ
る。３……ブーム、５……ブームシリンダ、６……
バケツト（作業具）、８……バケツトシリンダ、
２５，２６……検出器、２７，２８……電磁弁、
３３……合流弁。 FIG. 1 is a hydraulic circuit diagram showing an embodiment of the present invention;
Fig. 2 is a side view of the entire device, Fig. 3 is a layout of the controller, Fig. 4 is an enlarged view of the main parts, Fig. 5 is a drive circuit diagram, and Fig. 6 shows another embodiment. It is a drive circuit diagram. 3...Boom, 5...Boom cylinder, 6...
Bucket (working tool), 8... Bucket cylinder,
25, 26...Detector, 27, 28...Solenoid valve,
33...merging valve.

Claims

[Scope of utility model registration request]

A cylinder 8 that dumps and rolls back the work tool 6 supported at the tip of the boom 3, a solenoid valve 28 that controls the cylinder 8, and detectors 25 and 26 that detect the parallelism of the work tool 6. In a control device for a front loader, the solenoid valve 28 is switched in response to signals from the detectors 25 and 26 when the boom 6 is raised and lowered to extend and retract the cylinder 8 in order to maintain the parallel state of the work tool 6. valve 2
8 and the cylinder 8, a merging valve 33 is provided between the cylinder 8 and the cylinder 8 for switching the cylinder chambers 8a and 8b of the cylinder 8 into communication only when the work tool 6 is being dumped.