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JPS5490437A - Hydraulic circuit for operating clutch - Google Patents

Hydraulic circuit for operating clutch

Info

Publication number
JPS5490437A
JPS5490437A JP15669377A JP15669377A JPS5490437A JP S5490437 A JPS5490437 A JP S5490437A JP 15669377 A JP15669377 A JP 15669377A JP 15669377 A JP15669377 A JP 15669377A JP S5490437 A JPS5490437 A JP S5490437A
Authority
JP
Japan
Prior art keywords
clutch
lever
circuit
operating
cylinder
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.)
Pending
Application number
JP15669377A
Other languages
Japanese (ja)
Inventor
Fuyuki Nagai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Construction Machinery Co Ltd
Original Assignee
Hitachi Construction Machinery Co Ltd
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 Hitachi Construction Machinery Co Ltd filed Critical Hitachi Construction Machinery Co Ltd
Priority to JP15669377A priority Critical patent/JPS5490437A/en
Publication of JPS5490437A publication Critical patent/JPS5490437A/en
Pending legal-status Critical Current

Links

Landscapes

  • Fluid-Pressure Circuits (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)

Abstract

PURPOSE: To improve the operability of a clutch by enabling easy acquisition of operating position of a clutch slip and replacement of oil within hydraulic circuit of a clutch cylinder to thereby reduce the oil viscosity in the clutch cylinder in cold district.
CONSTITUTION: In a clutch in which hydraulic oil is supplied to a clutch cylinder 3 to extend to push up a piston 3b to thereby rotate a lever 5 around a pin 7 to urge the end of a clutch band 8 by the end of the lever 5 so as to thus engage the band 8 with the inner periphery of a winding drum to transmit a power thereto, there are provided operating valves 17, 18 for arbitrarily variably altering the hydraulic pressure from a hydraulic pump 1 in response to the operating amount of an operating lever 19, a branching circuit 21 branched from a circuit between the valves 17, 18 and the cylinder 3, a control valve 22 and relief valve 23 interposed with the circuit 21, and a pilot valve 20 connected to the vent poppet of the valve 23 for urging a spring 29 in proportion to the operating amount of the lever 19.
COPYRIGHT: (C)1979,JPO&Japio
JP15669377A 1977-12-27 1977-12-27 Hydraulic circuit for operating clutch Pending JPS5490437A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15669377A JPS5490437A (en) 1977-12-27 1977-12-27 Hydraulic circuit for operating clutch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15669377A JPS5490437A (en) 1977-12-27 1977-12-27 Hydraulic circuit for operating clutch

Publications (1)

Publication Number Publication Date
JPS5490437A true JPS5490437A (en) 1979-07-18

Family

ID=15633263

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15669377A Pending JPS5490437A (en) 1977-12-27 1977-12-27 Hydraulic circuit for operating clutch

Country Status (1)

Country Link
JP (1) JPS5490437A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60211103A (en) * 1984-03-23 1985-10-23 ハスコ　インタ−ナシヨナル　インコ−ポレイテツド Combination valve having double pressure vent structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60211103A (en) * 1984-03-23 1985-10-23 ハスコ　インタ−ナシヨナル　インコ−ポレイテツド Combination valve having double pressure vent structure
JP2694637B2 (en) * 1984-03-23 1997-12-24 ハスコ インターナショナル インコーポレイテッド Combination valve with double pressure relief structure

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