JPH0237959U - - Google Patents

Info

Publication number
JPH0237959U
JPH0237959U JP11543988U JP11543988U JPH0237959U JP H0237959 U JPH0237959 U JP H0237959U JP 11543988 U JP11543988 U JP 11543988U JP 11543988 U JP11543988 U JP 11543988U JP H0237959 U JPH0237959 U JP H0237959U
Authority
JP
Japan
Prior art keywords
hydraulic
hydraulic cylinder
side oil
motor
pressure 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.)
Granted
Application number
JP11543988U
Other languages
Japanese (ja)
Other versions
JPH0750426Y2 (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 JP1988115439U priority Critical patent/JPH0750426Y2/en
Publication of JPH0237959U publication Critical patent/JPH0237959U/ja
Application granted granted Critical
Publication of JPH0750426Y2 publication Critical patent/JPH0750426Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Operation Control Of Excavators (AREA)
  • Fluid-Pressure Circuits (AREA)

Description

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

第１図、第２図はこの考案にかかるそれぞれ第
１、第２実施例油圧回路図、第３図は油圧シヨベ
ルにクレーン装置を装着した状態を示す側面図、
第４図は従来技術の油圧回路図である。 ４…油圧シリンダ、６…油圧モータ、１０〜１
５，１０′，４０…方向切換弁、１６…第１ポン
プ、１７…第２ポンプ、２８，２９…フローデイ
バイダ、３０，３１…分流側油口、３８，３８′
…圧油供給側油口。 1 and 2 are hydraulic circuit diagrams of first and second embodiments of this invention, respectively, and FIG. 3 is a side view showing a state in which a crane device is attached to a hydraulic excavator.
FIG. 4 is a hydraulic circuit diagram of the prior art. 4...Hydraulic cylinder, 6...Hydraulic motor, 10-1
5, 10', 40... Directional switching valve, 16... First pump, 17... Second pump, 28, 29... Flow divider, 30, 31... Diversion side oil port, 38, 38'
...Pressure oil supply side oil port.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 各種油圧アクチユエータを装備した建設機械に
、作業機用油圧アクチユエータとして油圧モータ
および油圧シリンダを取付け、上記すべての油圧
アクチユエータを２個のグループＡ，Ｂに分け、
その２個のグループＡ，Ｂに対して各々別個のポ
ンプより圧油を供給するようにし、また上記グル
ープＡ，Ｂのそれぞれアクチユエータ用方向切換
弁をすべて並列に連結し、さらに上記作業機用油
圧モータに対して上記２個のポンプからの圧油を
合流操作可能とした建設機械において、上記作業
機用油圧シリンダを制御操作する方向切換弁と、
その油圧シリンダのヘツド側油室およびロツド側
油室とをそれぞれ連通する作動回路にフローデイ
バイダをそれぞれ設け、その両フローデイバイダ
の分流側油口を連結し、その分流側油口と、上記
油圧モータ用方向切換弁の圧油供給側油口とを連
通せしめ、上記油圧モータと油圧シリンダとを同
時操作するとき油圧シリンダに供給される圧油の
うち余剰流量を上記油圧モータに付加供給可能に
構成したことを特徴とする建設機械の油圧回路。 A hydraulic motor and a hydraulic cylinder are attached as hydraulic actuators for work equipment to construction machinery equipped with various hydraulic actuators, and all the above hydraulic actuators are divided into two groups A and B.
Pressure oil is supplied to the two groups A and B from separate pumps, and the actuator directional control valves of the groups A and B are all connected in parallel, and the hydraulic oil for the work equipment is connected in parallel. In a construction machine capable of merging pressure oil from the two pumps to a motor, a directional switching valve for controlling the hydraulic cylinder for the working machine;
A flow divider is provided in each operating circuit that communicates with the head side oil chamber and the rod side oil chamber of the hydraulic cylinder, and the branch side oil ports of both flow dividers are connected, and the branch side oil port and the above flow divider are connected. By communicating with the pressure oil supply side oil port of the directional switching valve for the hydraulic motor, when the hydraulic motor and the hydraulic cylinder are operated simultaneously, the surplus flow rate of the pressure oil supplied to the hydraulic cylinder can be additionally supplied to the hydraulic motor. A hydraulic circuit for construction machinery, characterized in that it is configured as follows.
JP1988115439U 1988-08-31 1988-08-31 Hydraulic circuit of construction machinery Expired - Lifetime JPH0750426Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1988115439U JPH0750426Y2 (en) 1988-08-31 1988-08-31 Hydraulic circuit of construction machinery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1988115439U JPH0750426Y2 (en) 1988-08-31 1988-08-31 Hydraulic circuit of construction machinery

Publications (2)

Publication Number Publication Date
JPH0237959U true JPH0237959U (en) 1990-03-13
JPH0750426Y2 JPH0750426Y2 (en) 1995-11-15

Family

ID=31357098

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1988115439U Expired - Lifetime JPH0750426Y2 (en) 1988-08-31 1988-08-31 Hydraulic circuit of construction machinery

Country Status (1)

Country Link
JP (1) JPH0750426Y2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110758094A (en) * 2019-10-30 2020-02-07 南通威而多专用汽车制造有限公司 Hydraulic system for engineering machinery walking and working method thereof
JP2022093764A (en) * 2020-12-14 2022-06-24 ヤンマーホールディングス株式会社 Hydraulic system of construction machine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58118306A (en) * 1981-12-28 1983-07-14 Daikin Ind Ltd Hydraulic circuit
JPS59116460U (en) * 1983-01-24 1984-08-06 日立建機株式会社 work equipment

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58118306A (en) * 1981-12-28 1983-07-14 Daikin Ind Ltd Hydraulic circuit
JPS59116460U (en) * 1983-01-24 1984-08-06 日立建機株式会社 work equipment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110758094A (en) * 2019-10-30 2020-02-07 南通威而多专用汽车制造有限公司 Hydraulic system for engineering machinery walking and working method thereof
CN110758094B (en) * 2019-10-30 2024-04-26 南通威而多专用汽车制造有限公司 Hydraulic system for engineering machinery walking and working method thereof
JP2022093764A (en) * 2020-12-14 2022-06-24 ヤンマーホールディングス株式会社 Hydraulic system of construction machine

Also Published As

Publication number Publication date
JPH0750426Y2 (en) 1995-11-15

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