JPS5973462U - Hydraulic pressure control circuit for hydraulic excavator travel - Google Patents

Hydraulic pressure control circuit for hydraulic excavator travel

Info

Publication number
JPS5973462U
JPS5973462U JP1982166923U JP16692382U JPS5973462U JP S5973462 U JPS5973462 U JP S5973462U JP 1982166923 U JP1982166923 U JP 1982166923U JP 16692382 U JP16692382 U JP 16692382U JP S5973462 U JPS5973462 U JP S5973462U
Authority
JP
Japan
Prior art keywords
valve
control circuit
hydraulic
pressure control
pressure reducing
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
JP1982166923U
Other languages
Japanese (ja)
Other versions
JPH0320372Y2 (en
Inventor
阿部　美平
川崎　光茂
長浜　利夫
土居崎　圓治
野坂　寛
Original Assignee
新キャタピラ−三菱株式会社
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 by 新キャタピラ−三菱株式会社 filed Critical 新キャタピラ−三菱株式会社
Priority to JP1982166923U priority Critical patent/JPS5973462U/en
Publication of JPS5973462U publication Critical patent/JPS5973462U/en
Application granted granted Critical
Publication of JPH0320372Y2 publication Critical patent/JPH0320372Y2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Fluid-Pressure Circuits (AREA)
  • Operation Control Of Excavators (AREA)
  • Non-Deflectable Wheels, Steering Of Trailers, Or Other Steering (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) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

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

第１図は従来の液圧制御回路の説明図、第２図は本考案
の液圧制御回路の一実施例を示す説明図である。 図に於て、１・・・オイルタンク、２・・・固定容量ポ
ンプ、３・・・リリーフ弁、４・・・減圧弁、Ｇ・・・
かじ取り弁、６−Ｌ、　　＄−Ｒ・・・スプール、１１
・・・切換弁、１１−３・・・ロッド、２１，２２，２
３，２４゜２５．２６・・・油路、３１．３２．３３・
・・油路、７１、　７２・・・制御弁、８１，８２川モ
ータ。FIG. 1 is an explanatory diagram of a conventional hydraulic pressure control circuit, and FIG. 2 is an explanatory diagram showing an embodiment of the hydraulic pressure control circuit of the present invention. In the figure, 1...oil tank, 2...fixed capacity pump, 3...relief valve, 4...pressure reducing valve, G...
Steering valve, 6-L, $-R...Spool, 11
...Switching valve, 11-3...Rod, 21, 22, 2
3,24゜25.26...oil passage, 31.32.33.
...Oil passage, 71, 72...Control valve, 81, 82 River motor.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ポンプ、前進後進ペダルに接続した減圧弁、かじ取り弁
、走行モータ用制御弁のパイロット室に油路を順次接続
して構成した油圧動力ショベルの走行を制御する回路に
於て、１個の減圧弁に前進、後進ペダルを設け、一方の
ペダル操作により切換えつる切換弁を減圧弁とかじ取り
弁との間に設け、且つかじ取り弁に切換レバーを設けた
ことを特徴とする液圧制御回路。In a circuit that controls the running of a hydraulic power excavator, which is configured by sequentially connecting an oil line to the pilot chamber of the pump, the pressure reducing valve connected to the forward and reverse pedals, the steering valve, and the control valve for the travel motor, one pressure reducing valve is used. 1. A hydraulic control circuit characterized in that forward and reverse pedals are provided, a switching valve that can be switched by operating one of the pedals is provided between a pressure reducing valve and a steering valve, and a switching lever is provided on the steering valve.
JP1982166923U 1982-11-05 1982-11-05 Hydraulic pressure control circuit for hydraulic excavator travel Granted JPS5973462U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1982166923U JPS5973462U (en) 1982-11-05 1982-11-05 Hydraulic pressure control circuit for hydraulic excavator travel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1982166923U JPS5973462U (en) 1982-11-05 1982-11-05 Hydraulic pressure control circuit for hydraulic excavator travel

Publications (2)

Publication Number Publication Date
JPS5973462U true JPS5973462U (en) 1984-05-18
JPH0320372Y2 JPH0320372Y2 (en) 1991-05-01

Family

ID=30365318

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1982166923U Granted JPS5973462U (en) 1982-11-05 1982-11-05 Hydraulic pressure control circuit for hydraulic excavator travel

Country Status (1)

Country Link
JP (1) JPS5973462U (en)

Also Published As

Publication number Publication date
JPH0320372Y2 (en) 1991-05-01

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