JPS59107667U - Hydraulic control circuit for earthmoving vehicles - Google Patents
Hydraulic control circuit for earthmoving vehiclesInfo
- Publication number
- JPS59107667U JPS59107667U JP19938782U JP19938782U JPS59107667U JP S59107667 U JPS59107667 U JP S59107667U JP 19938782 U JP19938782 U JP 19938782U JP 19938782 U JP19938782 U JP 19938782U JP S59107667 U JPS59107667 U JP S59107667U
- Authority
- JP
- Japan
- Prior art keywords
- blade
- circuit
- traveling system
- valve
- oil
- 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.)
- Pending
Links
Landscapes
- Operation Control Of Excavators (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は本考案を装備した木工車輛の全体側面図、第２
図は油圧回路図である。
図中、４はブレード、２３はブレード上げ側のリリーフ
弁、２４はブレード下げ側のリリーフ弁、２５は切換弁
、Ａは走行系の油圧回路、Ｂはブレード系の油圧回路、
Ｃは油圧制御回路である。Figure 1 is an overall side view of a woodworking vehicle equipped with the present invention, Figure 2
The figure is a hydraulic circuit diagram. In the figure, 4 is a blade, 23 is a relief valve on the blade raising side, 24 is a relief valve on the blade lowering side, 25 is a switching valve, A is a traveling system hydraulic circuit, B is a blade system hydraulic circuit,
C is a hydraulic control circuit.
Claims (2)
するようにした土工車輌において、上記走行系の油圧回
路とブレード系の油圧回路をＩＪ ＩＪ−フ弁を備えた
切換弁を介して継続自在に接続し、該切換弁が「続」状
態では、ブレード荷重が増大して走行系の回路圧が設定
圧に達した際上記ＩＪ ＩＪ−フ弁の作動で走行系の高
圧油をブレード上げ側の回路に流入せしめてブレードを
自動的に上昇させると共に、ブレード下げ検回路の油を
タンク側に還流させるよく構成したことを特徴とする土
工車輌における油圧制御回路。(1) In an earthmoving vehicle in which the traveling system and the blade system are controlled by separate hydraulic circuits, the traveling system hydraulic circuit and the blade system hydraulic circuit are connected via a switching valve equipped with an IJ-F valve. When the switching valve is in the "continuous" state, when the blade load increases and the traveling system circuit pressure reaches the set pressure, the IJ IJ-F valve operates to drain the high pressure oil of the traveling system. A hydraulic control circuit for an earthmoving vehicle, characterized in that it is well configured to cause oil to flow into a circuit on the blade raising side to automatically raise the blade, and to flow oil in the blade lowering detection circuit back to the tank side.
値に達した際、走行系の高圧油をブレード上げ検回路に
流入させるべく作動するブレード上げ側のリリーフ弁と
、該ブレー１−′上げ側リリーフ弁の作動に応動してブ
レード下げ検回路の油をタンク側に還流させるべく作動
するブレード下げ側のリリーフ弁とよりなることを特徴
とする実用新案登録請求の範囲第１項記載の土工車輌に
おける油圧制御回路。(2) The 'J IJ-F valve mentioned above is a relief valve on the blade raising side that operates to allow high pressure oil in the traveling system to flow into the blade raising detection circuit when the traveling system circuit pressure reaches a set value. Utility model registration claim No. 1, comprising: a relief valve on the blade lowering side that operates to return oil in the blade lowering detection circuit to the tank side in response to the operation of the brake 1-' raising side relief valve. Hydraulic control circuit for the earthmoving vehicle according to item 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19938782U JPS59107667U (en) | 1982-12-31 | 1982-12-31 | Hydraulic control circuit for earthmoving vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19938782U JPS59107667U (en) | 1982-12-31 | 1982-12-31 | Hydraulic control circuit for earthmoving vehicles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59107667U true JPS59107667U (en) | 1984-07-20 |
Family
ID=30424918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19938782U Pending JPS59107667U (en) | 1982-12-31 | 1982-12-31 | Hydraulic control circuit for earthmoving vehicles |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59107667U (en) |
-
1982
- 1982-12-31 JP JP19938782U patent/JPS59107667U/en active Pending
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