JPS5783675A - Variable capacity liquid pressure unit - Google Patents

Variable capacity liquid pressure unit

Info

Publication number
JPS5783675A
JPS5783675A JP55159808A JP15980880A JPS5783675A JP S5783675 A JPS5783675 A JP S5783675A JP 55159808 A JP55159808 A JP 55159808A JP 15980880 A JP15980880 A JP 15980880A JP S5783675 A JPS5783675 A JP S5783675A
Authority
JP
Japan
Prior art keywords
control
pressure
reduced pressure
spool
control valve
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
JP55159808A
Other languages
Japanese (ja)
Inventor
Takeshi Horiuchi
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.)
Daikin Industries Ltd
Original Assignee
Daikin Industries Ltd
Daikin Kogyo 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 Daikin Industries Ltd, Daikin Kogyo Co Ltd filed Critical Daikin Industries Ltd
Priority to JP55159808A priority Critical patent/JPS5783675A/en
Publication of JPS5783675A publication Critical patent/JPS5783675A/en
Pending legal-status Critical Current

Links

Landscapes

  • Reciprocating Pumps (AREA)

Abstract

PURPOSE: To enable either long ramp control or constant power control to be applicable by applying the reduced pressure of the high pressure side to the control valve used for PC control.
CONSTITUTION: A proportional reducing valve 60 is interposed in a junction passage 23 between an ejection passage 17 and a control valve 20, and a reduced pressure is applied to one end of the spool 22. When the pressure of the ejected fluid is below a certain level and the reduced pressure is below the level set by pushing unit 40, the spool 22 of the control valve 20 stands still instead of movement. When the pressure of the ejected fluid rises and the reduced pressure exceeds the set level, the spool 22 moves against the action of pushing unit 40 to actuate the control plunger 14 which regulate the slant angle a swash plate 6. Since the control valve 20 is controlled under the reduced pressure in the secondary side of the proportional reducing valve 60 and the control pressure is gradually raised in proportion to the high pressure side pressure, the long ramp control is thus available.
COPYRIGHT: (C)1982,JPO&Japio
JP55159808A 1980-11-12 1980-11-12 Variable capacity liquid pressure unit Pending JPS5783675A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55159808A JPS5783675A (en) 1980-11-12 1980-11-12 Variable capacity liquid pressure unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55159808A JPS5783675A (en) 1980-11-12 1980-11-12 Variable capacity liquid pressure unit

Publications (1)

Publication Number Publication Date
JPS5783675A true JPS5783675A (en) 1982-05-25

Family

ID=15701700

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55159808A Pending JPS5783675A (en) 1980-11-12 1980-11-12 Variable capacity liquid pressure unit

Country Status (1)

Country Link
JP (1) JPS5783675A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50152303A (en) * 1974-05-28 1975-12-08
JPS51130902A (en) * 1975-05-08 1976-11-13 Daikin Ind Ltd Fluind equipment

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50152303A (en) * 1974-05-28 1975-12-08
JPS51130902A (en) * 1975-05-08 1976-11-13 Daikin Ind Ltd Fluind equipment

Similar Documents

Publication Publication Date Title
JPS5783675A (en) Variable capacity liquid pressure unit
DE3176471D1 (en) Animal watering device
JPS5794103A (en) Hydraulic circuit
JPS5380628A (en) Inching valve of hydraulic pressure control device for clutch
DE2820342A1 (en) DEVICE FOR A HYDRAULIC BRAKE AMPLIFIER
JPS578382A (en) Flow control of pressure fluid
JPS5783676A (en) Variable capacity liquid pressure unit
JPS5783677A (en) Variable capacity type hydraulic apparatus
JPS5659001A (en) Weight-loaded accumulator
JPS53140479A (en) Hydraulic pressure controller
JPS55115603A (en) Pressure-compensation controlling system for electro- hydraulic servo pressurizing apparatus
JPS5718485A (en) Liquid pressurizing device of variable volume type
JPS56134663A (en) Hydraulic device for turning hydraulic crane or the like
JPS57936A (en) Deceleration sensing type hydraulic controller
JPS5791388A (en) Ejection quantity controller for hydraulic pump
JPS57937A (en) Deceleration sensing type hydraulic controller for double piping
JPS57102587A (en) Variable-volume type fluid pressure pump apparatus
JPS56162286A (en) Automatic pump-driving apparatus
JPS5783674A (en) Variable capacity liquid pressure unit
JPS6421228A (en) Pressure increasing device for hydraulic control circuit
JPS53140604A (en) Variable capacity pump
JPS53145104A (en) Variable capacity type hydraulic device
JPS52140002A (en) Variable volume type piston pump
JPS5692369A (en) Generating method of buoyancy energy applying irregular contraction and repulsive force of gas generated by transferring compressed liquid to gas
JPS574444A (en) Deceleration-responsive liquid pressure control valve