JPS608749U - Pilot hydraulic circuit device for hydraulic construction machinery - Google Patents
Pilot hydraulic circuit device for hydraulic construction machineryInfo
- Publication number
- JPS608749U JPS608749U JP10023983U JP10023983U JPS608749U JP S608749 U JPS608749 U JP S608749U JP 10023983 U JP10023983 U JP 10023983U JP 10023983 U JP10023983 U JP 10023983U JP S608749 U JPS608749 U JP S608749U
- Authority
- JP
- Japan
- Prior art keywords
- pilot
- valve
- circuit
- check valve
- hydraulic
- 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
Landscapes
- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (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−実施例の構成説明図、第２図はメイン
バルブ群の他の実施態様の説明図である。
１０はアーム用切換弁、１１はパケット用切換弁、４４
．４７はパイロットチェック弁、４０゜４８は電磁弁。FIG. 1 is an explanatory diagram of the configuration of an embodiment of the present invention, and FIG. 2 is an explanatory diagram of another embodiment of the main valve group. 10 is a switching valve for arm, 11 is a switching valve for packet, 44
．． 47 is a pilot check valve, 40°48 is a solenoid valve.
Claims (1)
ーボおよび作業機操作回路のメインポンプのポンプサー
ボをパイロット回路のパイロット圧で作動するようにし
たものにおいて、アーム用シリンダ２７′のヘッド側Ｂ
をパイロットチェック弁４４を介してタンク２１に連通
し、パイロット回路に、アーム切換弁１０の切換作動を
行うと共にアーム引切換時にパイロットチェック弁４４
に液圧を送ってパイロットチェック弁４４を開作動する
電磁弁４０を設け、パケット用シリンダ２９′のヘッド
側Ｂ′をパイロットチェック弁４７を介してタンク２１
に連通し、パイロット回路に、パケット用切換弁１１の
切換作動を行うと共にパケットダンプ切換時にパイロッ
トチェック弁４７に液圧を送ってパイロットチェック弁
４７を開作動する電磁弁４Ｂを設けたことを特徴とする
液圧式建設機械のパイロット液圧回路装置。In a device in which the valve servo of the main valve group provided in the work machine operation circuit and the pump servo of the main pump of the work machine operation circuit are operated by the pilot pressure of the pilot circuit, the head side B of the arm cylinder 27'
is communicated with the tank 21 via the pilot check valve 44, and the pilot circuit is used to switch the arm switching valve 10, and the pilot check valve 44 is connected to the pilot circuit when the arm switching valve 10 is switched.
A solenoid valve 40 is provided which sends hydraulic pressure to open the pilot check valve 44, and the head side B' of the packet cylinder 29' is connected to the tank 21 via the pilot check valve 47.
A solenoid valve 4B is provided in the pilot circuit, which communicates with the pilot circuit and performs the switching operation of the packet switching valve 11, and also sends hydraulic pressure to the pilot check valve 47 to open the pilot check valve 47 at the time of packet dump switching. Pilot hydraulic circuit device for hydraulic construction machinery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10023983U JPS608749U (en) | 1983-06-30 | 1983-06-30 | Pilot hydraulic circuit device for hydraulic construction machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10023983U JPS608749U (en) | 1983-06-30 | 1983-06-30 | Pilot hydraulic circuit device for hydraulic construction machinery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS608749U true JPS608749U (en) | 1985-01-22 |
| JPH0329412Y2 JPH0329412Y2 (en) | 1991-06-24 |
Family
ID=30237218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10023983U Granted JPS608749U (en) | 1983-06-30 | 1983-06-30 | Pilot hydraulic circuit device for hydraulic construction machinery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS608749U (en) |
-
1983
- 1983-06-30 JP JP10023983U patent/JPS608749U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0329412Y2 (en) | 1991-06-24 |
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