JPS6390696U - - Google Patents

Info

Publication number
JPS6390696U
JPS6390696U JP18432386U JP18432386U JPS6390696U JP S6390696 U JPS6390696 U JP S6390696U JP 18432386 U JP18432386 U JP 18432386U JP 18432386 U JP18432386 U JP 18432386U JP S6390696 U JPS6390696 U JP S6390696U
Authority
JP
Japan
Prior art keywords
oil chamber
plunger
pilot
check valve
port
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
JP18432386U
Other languages
Japanese (ja)
Other versions
JP2565838Y2 (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 JP1986184323U priority Critical patent/JP2565838Y2/en
Publication of JPS6390696U publication Critical patent/JPS6390696U/ja
Application granted granted Critical
Publication of JP2565838Y2 publication Critical patent/JP2565838Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Check Valves (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Forklifts And Lifting Vehicles (AREA)

Description

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

図面は本考案の実施例を示し、第１図はダブル
パイロツトチエツク弁の構造を示す断面図、第２
図は平衡保持回路を示す油圧回路図、第３図は作
業台の平衡保持回路を備えた高所作業車の作業状
態を示す側面図である。 １１……第１のパイロツトチエツク弁、１２…
…第２のパイロツトチエツク弁、１３……第１の
パイロツト管路、１４……第２のパイロツト管路
、１５・１６・１７・１８……油室、１９……第
１のプランジヤ、２０……第２のプランジヤ、２
１・２２……スプリング、２３……第１のパイロ
ツトピストン、２４……第２のパイロツトピスト
ン、２５・２６・２７・２８……ポート、３０…
…ケース。 The drawings show an embodiment of the present invention, and FIG. 1 is a sectional view showing the structure of a double pilot check valve, and FIG.
The figure is a hydraulic circuit diagram showing the balance maintaining circuit, and FIG. 3 is a side view showing the working state of the aerial work vehicle equipped with the balance maintaining circuit for the workbench. 11...first pilot check valve, 12...
...Second pilot check valve, 13...First pilot line, 14...Second pilot line, 15, 16, 17, 18...Oil chamber, 19...First plunger, 20... ...Second plunger, 2
1, 22... Spring, 23... First pilot piston, 24... Second pilot piston, 25, 26, 27, 28... Port, 30...
…Case.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 第１のパイロツトピストン２３を備えた油室１
５とスプリング２１により賦勢された第１のプラ
ンジヤ１９を備えた油室１７が該第１のプランジ
ヤ１９により仕切られた第１のパイロツトチエツ
ク弁１１と、第２のパイロツトピストン２４を備
えた油室１６とスプリング２２により賦勢された
第２のプランジヤ２０を備えた油室１８が該第２
のプランジヤ２０により仕切られた第２のパイロ
ツトチエツク弁と、前記油室１５と前記油室１８
を連結する第１のパイロツト管路１３と、前記油
室１６と前記油室１７を連結する第２のパイロツ
ト管路１４と、前記油室１７に連結されたポート
２５と、前記油室１８に連結されたポート２６と
、第１のプランジヤ１９と第１のパイロツトピス
トン２３間の油室１５に連結されたポート２７と
、第２のプランジヤ２０と第２のパイロツトピス
トン２４間の油室１６に連結されたポート２８と
を備えたことを特徴とするダブルパイロツトチエ
ツク弁。 Oil chamber 1 with first pilot piston 23
5, an oil chamber 17 including a first plunger 19 biased by a spring 21; a first pilot check valve 11 partitioned by the first plunger 19; and a second pilot piston 24. An oil chamber 18 having a chamber 16 and a second plunger 20 biased by a spring 22 is connected to the second plunger 20 .
a second pilot check valve partitioned by a plunger 20, the oil chamber 15 and the oil chamber 18;
a first pilot line 13 that connects the oil chamber 16 and the oil chamber 17; a second pilot line 14 that connects the oil chamber 16 and the oil chamber 17; a port 25 connected to the oil chamber 17; A port 27 connected to the oil chamber 15 between the first plunger 19 and the first pilot piston 23, and an oil chamber 16 between the second plunger 20 and the second pilot piston 24. A double pilot check valve comprising a connected port 28.
JP1986184323U 1986-11-29 1986-11-29 Double pilot check valve Expired - Lifetime JP2565838Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1986184323U JP2565838Y2 (en) 1986-11-29 1986-11-29 Double pilot check valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1986184323U JP2565838Y2 (en) 1986-11-29 1986-11-29 Double pilot check valve

Publications (2)

Publication Number Publication Date
JPS6390696U true JPS6390696U (en) 1988-06-13
JP2565838Y2 JP2565838Y2 (en) 1998-03-25

Family

ID=31131888

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1986184323U Expired - Lifetime JP2565838Y2 (en) 1986-11-29 1986-11-29 Double pilot check valve

Country Status (1)

Country Link
JP (1) JP2565838Y2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104989851A (en) * 2015-07-07 2015-10-21 安徽凡尔煤矿设备制造有限公司 Inverted-pull push check valve

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53126523A (en) * 1977-04-12 1978-11-04 Daikin Ind Ltd Double pilot check valve
JPS5699161U (en) * 1979-12-28 1981-08-05
JPS59165900U (en) * 1983-04-22 1984-11-07 株式会社　多田野鉄工所 Boom moment detection device for aerial work vehicles

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53126523A (en) * 1977-04-12 1978-11-04 Daikin Ind Ltd Double pilot check valve
JPS5699161U (en) * 1979-12-28 1981-08-05
JPS59165900U (en) * 1983-04-22 1984-11-07 株式会社　多田野鉄工所 Boom moment detection device for aerial work vehicles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104989851A (en) * 2015-07-07 2015-10-21 安徽凡尔煤矿设备制造有限公司 Inverted-pull push check valve

Also Published As

Publication number Publication date
JP2565838Y2 (en) 1998-03-25

Similar Documents

Publication Publication Date Title
JPS6390696U (en)
JPH02119713U (en)
JPS62170425U (en)
JPS63123803U (en)
JPS6061300U (en) Leveling valve of work platform balance device
JPS6198798U (en)
JPH01173577U (en)
JPH01126478U (en)
JPS61139996U (en)
JPS5910502U (en) Double check valve for lift cylinder control
JPH0312036U (en)
JPS6385509U (en)
JPS6446543U (en)
JPH0439474U (en)
JPS61168332U (en)
JPH03108902U (en)
JPH0341255U (en)
JPS61105405U (en)
JPH02140075U (en)
JPS60130293U (en) hydraulic jack
JPH0277173U (en)
JPS60107437U (en) Variable spring constant damper
JPS5990670U (en) pilot check valve
JPS58109604U (en) Hydraulic valve device for fine adjustment
JPS6327768U (en)