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
Links
- 230000009977 dual effect Effects 0.000 claims description 10
- 238000010586 diagram Methods 0.000 description 9
Landscapes
- Operation Control Of Excavators (AREA)
Description
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)
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.
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)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63226417A (en) * | 1986-10-22 | 1988-09-21 | Komatsu Ltd | Control mechanism for blade |
-
1990
- 1990-05-02 JP JP1990047045U patent/JP2513400Y2/en not_active Expired - Fee Related
Patent Citations (1)
| 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 |