JPH0183906U - - Google Patents

Info

Publication number
JPH0183906U
JPH0183906U JP1987178943U JP17894387U JPH0183906U JP H0183906 U JPH0183906 U JP H0183906U JP 1987178943 U JP1987178943 U JP 1987178943U JP 17894387 U JP17894387 U JP 17894387U JP H0183906 U JPH0183906 U JP H0183906U
Authority
JP
Japan
Prior art keywords
pilot
pump
variable displacement
switching valve
displacement 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
Application number
JP1987178943U
Other languages
Japanese (ja)
Other versions
JPH075283Y2 (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 JP1987178943U priority Critical patent/JPH075283Y2/en
Publication of JPH0183906U publication Critical patent/JPH0183906U/ja
Application granted granted Critical
Publication of JPH075283Y2 publication Critical patent/JPH075283Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Description

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

第１図はこの考案の一実施例を示す暖機回路。
第２図及び第３図は夫々この考案の他の実施例を
示す暖機回路。第４図は従来の油圧作業機の油圧
回路図である。 １：可変容量形油圧ポンプ、３：パイロツト切
換弁、４：アクチユエータ（油圧シリンダ）、５
：絞り弁、６：分岐管路、７：ポンプ制御器、８
：パイロツトポンプ、１０：リモコン弁、１１ａ
，１１ｂ：パイロツト管路、１３ａ，１３ｂ，１
３ｃ：切換弁（電磁切換弁）。 FIG. 1 shows a warm-up circuit showing an embodiment of this invention.
2 and 3 are warm-up circuits showing other embodiments of this invention, respectively. FIG. 4 is a hydraulic circuit diagram of a conventional hydraulic working machine. 1: Variable displacement hydraulic pump, 3: Pilot switching valve, 4: Actuator (hydraulic cylinder), 5
: Throttle valve, 6: Branch pipe, 7: Pump controller, 8
: Pilot pump, 10: Remote control valve, 11a
, 11b: Pilot pipe, 13a, 13b, 1
3c: Switching valve (electromagnetic switching valve).

Claims (1)

【実用新案登録請求の範囲】 (1) 可変容量型油圧ポンプ１からの吐出油をパ
イロツト切換弁３を介してアクチユエータ４に導
き、該アクチユエータ４を作動させるようにした
油圧作動機において、パイロツト切換弁３の後段
に絞り弁５を設け、かつ該絞り弁５の前段から分
岐した分岐管路６を可変容量型油圧ポンプ１のポ
ンプ制御器７に接続すると共に、分岐管路６を選
択的に連通又は遮断する切換弁１３ａ，１３ｂ，
１３ｃを介装したことを特徴とする油圧作業機の
暖機回路。 (2) 分岐管路６に設けた切換弁１３ａ，１３ｂ
を、分岐管路６とポンプ制御器７を連通した時、
パイロツトポンプ８或いは可変容量型油圧ポンプ
１とパイロツト切換弁３のパイロツト管路１１ａ
，１１ｂを遮断し、分岐管路６とポンプ制御器７
とを遮断した時、パイロツトポンプ８或いは可変
容量型油圧ポンプ１とパイロツト切換弁３のパイ
ロツト管路１１ａ，１１ｂを連通するようにした
ことを特徴とする実用新案登録請求の範囲第１項
に記載の油圧作業機の暖機回路。 (3) 分岐管路６に設けた切換弁１３ｃによつて
分岐管路６をポンプ制御器７とパイロツト切換弁
３のパイロツト管路１１ａ，１１ｂとに選択的に
切換接続するようにしたことを特徴とする実用新
案登録請求の範囲第１項に記載の油圧作業機の暖
機回路。[Scope of Claim for Utility Model Registration] (1) In a hydraulic actuator configured to guide oil discharged from a variable displacement hydraulic pump 1 to an actuator 4 via a pilot switching valve 3 to operate the actuator 4, a pilot switching valve is provided. A throttle valve 5 is provided after the valve 3, and a branch pipe 6 branched from the front stage of the throttle valve 5 is connected to the pump controller 7 of the variable displacement hydraulic pump 1, and the branch pipe 6 is selectively connected to the pump controller 7 of the variable displacement hydraulic pump 1. Switching valves 13a, 13b that communicate or shut off,
A warm-up circuit for a hydraulic working machine characterized by interposing a 13c. (2) Switching valves 13a and 13b provided in branch pipe 6
When the branch pipe 6 and the pump controller 7 are communicated,
Pilot pump 8 or variable displacement hydraulic pump 1 and pilot pipe line 11a of pilot switching valve 3
, 11b, branch line 6 and pump controller 7.
According to claim 1 of the utility model registration claim, the pilot pump 8 or the variable displacement hydraulic pump 1 and the pilot pipe lines 11a and 11b of the pilot switching valve 3 are communicated with each other when the pilot pump 8 or the variable displacement hydraulic pump 1 is shut off. warm-up circuit for hydraulic work equipment. (3) The branch line 6 is selectively connected to the pump controller 7 and the pilot lines 11a and 11b of the pilot switching valve 3 by the switching valve 13c provided in the branch line 6. A warm-up circuit for a hydraulic working machine according to claim 1 of the patented utility model.
JP1987178943U 1987-11-26 1987-11-26 Warm-up circuit of hydraulic working machine Expired - Lifetime JPH075283Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1987178943U JPH075283Y2 (en) 1987-11-26 1987-11-26 Warm-up circuit of hydraulic working machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987178943U JPH075283Y2 (en) 1987-11-26 1987-11-26 Warm-up circuit of hydraulic working machine

Publications (2)

Publication Number Publication Date
JPH0183906U true JPH0183906U (en) 1989-06-05
JPH075283Y2 JPH075283Y2 (en) 1995-02-08

Family

ID=31470535

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987178943U Expired - Lifetime JPH075283Y2 (en) 1987-11-26 1987-11-26 Warm-up circuit of hydraulic working machine

Country Status (1)

Country Link
JP (1) JPH075283Y2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05169510A (en) * 1991-12-24 1993-07-09 Nissei Plastics Ind Co Temperature raising device of working oil
JP2020002995A (en) * 2018-06-27 2020-01-09 株式会社クボタ Hydraulic system of work machine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2024052002A (en) * 2022-09-30 2024-04-11 カヤバ株式会社 Fluid Pressure Equipment

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0173506U (en) * 1987-11-06 1989-05-18

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0173506U (en) * 1987-11-06 1989-05-18

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05169510A (en) * 1991-12-24 1993-07-09 Nissei Plastics Ind Co Temperature raising device of working oil
JP2020002995A (en) * 2018-06-27 2020-01-09 株式会社クボタ Hydraulic system of work machine

Also Published As

Publication number Publication date
JPH075283Y2 (en) 1995-02-08

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