JPH0383257U

JPH0383257U -

Info

Publication number: JPH0383257U
Application number: JP14215989U
Authority: JP
Priority date: 1989-12-07
Filing date: 1989-12-07
Publication date: 1991-08-23

Description

[Brief explanation of the drawing]

第１図は実施例に係るブレード振動装置の概要
を示す油圧回路図、第２図はブルドーザの側面か
らみたブレード操作機構の概略説明図、第３図は
ブレードを左にチルトしたブルドーザの概略正面
図、第４図は従来の技術によるブレードピツチお
よびチルト装置の概要を示す油圧回路図である。１，１２……油圧ポンプ、２……左チルトシリ
ンダ、３……右チルトシリンダ、４……メインバ
ルブ、５……振動バルブ、６……ピツチバルブ、
７……デユアルチルトバルブ、８……コントロー
ラ、９……振動モードスイツチ、１０……ピツチ
モードスイツチ、１１……デユアルチルトモード
スイツチ。 Fig. 1 is a hydraulic circuit diagram showing an overview of the blade vibrating device according to the embodiment, Fig. 2 is a schematic explanatory diagram of the blade operating mechanism seen from the side of the bulldozer, and Fig. 3 is a schematic front view of the bulldozer with the blade tilted to the left. 4 are hydraulic circuit diagrams showing an outline of a blade pitch and tilt device according to the prior art. 1, 12...Hydraulic pump, 2...Left tilt cylinder, 3...Right tilt cylinder, 4...Main valve, 5...Vibration valve, 6...Pitch valve,
7...Dual tilt valve, 8...Controller, 9...Vibration mode switch, 10...Pitch mode switch, 11...Dual tilt mode switch.

Claims

[Scope of utility model registration request]

In a bulldozer, a main valve 4, a pitch circuit, and a dual tilt circuit are included in the hydraulic circuit from the hydraulic pump 1 to the left and right blade tilt cylinders 2 and 3, which perform switching operations for pitch back, pitch dump, or left/right tilt of the blade. A pitch valve 6 and a dual tilt valve 7 are provided, a controller 8 sends excitation current to the solenoids of the pitch valve 6 and the dual tilt valve 7, a pitch mode switch 10 inputs a command signal to the controller 8, and a dual tilt mode. A vibration valve 5 is provided between the main valve 4, pitch valve 6, and dual tilt valve 7 of a blade pitch and tilt device equipped with a switch 11, and an excitation current is periodically sent from the controller 8 to the solenoid of the vibration valve 5. A blade vibrating device characterized by being provided with an electric circuit and a vibration mode switch 9 for inputting a command signal to a controller 8.