JPH049448U - - Google Patents

Info

Publication number
JPH049448U
JPH049448U JP4704590U JP4704590U JPH049448U JP H049448 U JPH049448 U JP H049448U JP 4704590 U JP4704590 U JP 4704590U JP 4704590 U JP4704590 U JP 4704590U JP H049448 U JPH049448 U JP H049448U
Authority
JP
Japan
Prior art keywords
tilt
switching valve
cylinders
dual
side chamber
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP4704590U
Other languages
Japanese (ja)
Other versions
JP2513400Y2 (en
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1990047045U priority Critical patent/JP2513400Y2/en
Publication of JPH049448U publication Critical patent/JPH049448U/ja
Application granted granted Critical
Publication of JP2513400Y2 publication Critical patent/JP2513400Y2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Operation Control Of Excavators (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本考案に係るデユアルチルトシリンダ
の油圧回路の一実施例を示す回路図、第2図は本
考案のデユアル左チルト時のシリンダの負荷状態
図、第3図は同じくデユアル右チルト時のシリン
ダの負荷状態図、第4図乃至第10図は従来例を
示し、第4図はデユアルチルトシリンダの油圧回
路図、第5図はデユアル左チルトの場合における
ブレートと車体に掛かる荷重分布図、第6図は第
5図の場合の両チルトシリンダに作用する力を示
す状態図、第7図は第6におけるシリンダの負荷
状態図、第8図はデユアル右チルトの場合におけ
る車体に掛かる荷重分布図、第9図は第8図の場
合の両チルトシリンダに作用する力を示す状態図
、第10図は第9図におけるシリンダの負荷状態
図である。 1……駆動源、2……油圧ポンプ、3,4……
チルトシリンダ、3a,4a……ヘツド側室、3
b,4b……ボトム側室、5……方向切換弁、6
……ピツチ用2位置切換弁、7……デユアル用2
位置切換弁、8……ピツチ用ソレノイド弁、9…
…デユアル用ソレノイド弁、10,11……パイ
ロツト回路、12,13,14……主回路、15
……パイロツト回路、a,b,c……方向切換弁
、ピツチ用2位置切換弁、およびデユアル用2位
置切換弁の切換え位置。
Fig. 1 is a circuit diagram showing an embodiment of the hydraulic circuit of the dual tilt cylinder according to the present invention, Fig. 2 is a diagram of the load state of the cylinder during dual left tilt of the present invention, and Fig. 3 is also during dual right tilt. Fig. 4 to Fig. 10 show a conventional example, Fig. 4 is a hydraulic circuit diagram of a dual tilt cylinder, and Fig. 5 is a diagram of load distribution on the plate and vehicle body in the case of dual left tilt. , Figure 6 is a state diagram showing the force acting on both tilt cylinders in the case of Figure 5, Figure 7 is a diagram of the load state of the cylinders in Figure 6, and Figure 8 is the load applied to the vehicle body in the case of dual right tilt. The distribution diagram, FIG. 9 is a state diagram showing the force acting on both tilt cylinders in the case of FIG. 8, and FIG. 10 is a state diagram of the load state of the cylinders in FIG. 1... Drive source, 2... Hydraulic pump, 3, 4...
Tilt cylinder, 3a, 4a...Head side chamber, 3
b, 4b... Bottom side chamber, 5... Directional switching valve, 6
...2-position switching valve for pitch, 7...2 for dual
Position switching valve, 8... Pitch solenoid valve, 9...
...Dual solenoid valve, 10, 11... Pilot circuit, 12, 13, 14... Main circuit, 15
...Pilot circuit, a, b, c...Switching positions of the directional switching valve, 2-position switching valve for pitch, and 2-position switching valve for dual.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ブルドーザ前面に設置されたブレードの左右を
チルトシリンダにより作動させて、チルトおよび
ピツチ操作を行わせるブレード制御陽油圧回路に
おいて、チルト操作中は前記左右のチルトシリン
ダのうち、一方のチルトシリンダのボトム側室を
方向切換弁を介して油圧ポンプに接続し、他方の
チルトシリンダのボトム側室を前記方向切換弁を
介してタンクに接続すると共に、前記左右のチル
トシリンダの各ヘツド側室同士を接続したことを
特徴とするデユアルチルトシリンダの油圧回路。
In a blade control positive hydraulic circuit that operates the left and right sides of the blade installed at the front of the bulldozer using tilt cylinders to perform tilt and pitch operations, during the tilt operation, the bottom side chamber of one of the left and right tilt cylinders is activated. is connected to a hydraulic pump via a directional switching valve, the bottom side chamber of the other tilt cylinder is connected to the tank via the directional switching valve, and the head side chambers of the left and right tilt cylinders are connected to each other. Hydraulic circuit for dual tilt cylinder.
JP1990047045U 1990-05-02 1990-05-02 Hydraulic circuit for blade operation of bulldozer Expired - Fee Related JP2513400Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1990047045U JP2513400Y2 (en) 1990-05-02 1990-05-02 Hydraulic circuit for blade operation of bulldozer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990047045U JP2513400Y2 (en) 1990-05-02 1990-05-02 Hydraulic circuit for blade operation of bulldozer

Publications (2)

Publication Number Publication Date
JPH049448U true JPH049448U (en) 1992-01-28
JP2513400Y2 JP2513400Y2 (en) 1996-10-02

Family

ID=31562637

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1990047045U Expired - Fee Related JP2513400Y2 (en) 1990-05-02 1990-05-02 Hydraulic circuit for blade operation of bulldozer

Country Status (1)

Country Link
JP (1) JP2513400Y2 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63226417A (en) * 1986-10-22 1988-09-21 Komatsu Ltd Control mechanism for blade

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63226417A (en) * 1986-10-22 1988-09-21 Komatsu Ltd Control mechanism for blade

Also Published As

Publication number Publication date
JP2513400Y2 (en) 1996-10-02

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees