EP0361643A1 - Vanne de commande à plusieurs étages - Google Patents

Vanne de commande à plusieurs étages Download PDF

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Publication number
EP0361643A1
EP0361643A1 EP89305711A EP89305711A EP0361643A1 EP 0361643 A1 EP0361643 A1 EP 0361643A1 EP 89305711 A EP89305711 A EP 89305711A EP 89305711 A EP89305711 A EP 89305711A EP 0361643 A1 EP0361643 A1 EP 0361643A1
Authority
EP
European Patent Office
Prior art keywords
ports
port
cylinder ports
selector valve
pump 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.)
Withdrawn
Application number
EP89305711A
Other languages
German (de)
English (en)
Inventor
Manabu C/O Sanyo Kiki K.K. Ogou
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.)
Sanyo Kiki Co Ltd
Original Assignee
Sanyo Kiki 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 Sanyo Kiki Co Ltd filed Critical Sanyo Kiki Co Ltd
Publication of EP0361643A1 publication Critical patent/EP0361643A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors

Definitions

  • a multi-stage selector valve as shown in Fig. 2, comprises a housing 2 having a pump port P formed in the middle of a spool receiving hole 1, two sets of cylinder ports D, A and C, B on opposite sides of said pump port P, and tank ports T1 and T2 at opposite ends of said hole communicating with each other through a bypass circuit T3, all ports being disposed at equal intervals, and a spool 5 switchably slidably inserted in said spool receiving hole 1 in said housing 2 so that it is movable between right and left positions, said spool having control sections 5a and 5b, whereby in one position (left-hand side position) the cylinder ports D and C on the one hand are blocked while the cylinder ports A and B on the other hand are allowed to communicate with the pump port P and tank port T1 to thereby drive one hydraulic cylinder 3 and in the other position (right-hand side position) the cylinder ports A and B on the other hand are blocked while the cylinder ports D and C on the one hand are allowed to communicate with
  • the arrangement of the selector valve described above is as shown in Fig. 3 using hydraulic circuit symbols.
  • the switching action of this selector valve makes it possible to alternately activate the two hydraulic cylinders 3 and 4, the switching of the operating direction for the respective hydraulic valves being effected by a directional control valve S.
  • the selector valve described above employs a directional control valve to activate two hydraulic cylinders 3 and 4; however, when the number of hydraulic valves 3 and 4 is increased to more than two, one selector valve must be added for each increase in the number. Thus, as shown in Fig. 4, pipe lines 6 and 7 for connecting the selector valves are needed. If, therefore, the number of hydraulic cylinders 3 and 4 is increased, the pipe lines for connecting the selector valves become complicated, resulting in problems including increased cost, wider space for installation, higher probability of the pipe lines 16 and 7 being damaged or broken, and increased tendency for oil to leak.
  • the present invention has been proposed in view of the problems in the prior art described above, and its object is to provide a multi-stage selector valve which makes it possible to simplify pipe lines even if the number of hydraulic cylinders is increased.
  • the present invention provides a multi-stage selector valve comprising a housing 2 in which ports are formed in a plurality of parallel rows each consisting of a pump port P formed in the middle of a spool receiving hole 1, two sets of cylinder ports D, A and C, B disposed on opposite sides of said pump port P, and tank ports T1 and T2 at opposite ends of said hole communicating with each other through a bypass circuit T3, wherein the cylinder ports D and C in one set in one of the two adjacent rows communicate with the tank port T2 and pump port P in the other row through communication passages 8 and 9, and a plurality of spools 5 independently switchably slidably inserted in said spool receiving holes 1 in said housing 2 and having control sections whereby in one switch position the cylinder ports A and B in one set communicates with the pump port P and tank port T1 while the cylinder ports D and C in the other set are blocked, and in the other switch position the cylinder ports A and B in said one set are blocked while the cylinder ports D and C
  • the single housing 2 is formed with selector valve ports in a plurality of parallel rows, wherein the cylinder ports D and C in one set in one of the two adjacent rows communicate with the tank port T2 and pump port P in the other row through the communication passages 8 and 9; thus, the selector valves are connected inside the housing 2 by said communication passages 8 and 9, whereby the pipe lines can be simplified.
  • Fig. 1 is a middle longitudinal sectional view of a two-stage selector valve showing an embodiment of the present invention.
  • the numeral 1 denotes spool receiving holes; 2 denotes a housing; 3, 4 and 10 denote hydraulic cylinders; and 5 denotes spools.
  • the spool receiving holes 1 are disposed in parallel, extending transversely through the housing 2.
  • Each spool receiving port 1 is formed with a pump port P in the middle, two sets of cylinder ports D, A and C, B on opposite sides of the pump port, and tank ports T1 and T2 at opposite ends of the hole, all these ports being disposed at equal intervals, said tank ports T1 and T2 at opposite ends communicating with each other through a bypass circuit T3 formed in the housing 2.
  • the cylinder ports in one set in one of the two adjacent rows communicate with the tank port T2 and pump port P in the other row through the communication passages 8 and 9 formed in the housing 2.
  • the spools 5 are inserted in said spool receiving holes 1 in said housing 2 so that they are independently switchably slidable between two positions, each spool having control sections 5a and 5b whereby in one switch position the cylinder ports A and B in one set communicate with the pump port P and tank port T1 while the cylinder ports D and C in the other set are blocked, and in the other switch position the cylinder ports A and B in said one set are blocked while the cylinder ports D and C in the other set are allowed to communicate with the pump port P and tank port T2.
  • the cylinder ports D, C and A, B connected to the hydraulic cylinders 3 and 4 can be formed in the same plane, opposed planes or planes orthogonal to each other in the housing 2. This also applies to the port arrangement on the other side (lower side).
  • the ports D and C will be arranged to communicate with the pump port P and tank port T2 of the selector valve in the next row through the communication passages 8 and 9 in the housing 2, while the ports A and B will be formed in the plane of the front or back of the paper of Fig. 1.
  • Multi-stage selector valves having more than three stages may be constructed by utilizing the arrangement described above.
  • connections by pipe lines between selector valves can be omitted, providing advantages including simplification of pipe lines, prevention of damage and oil leakage, reduced cost, compact size and reduced installation space.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Multiple-Way Valves (AREA)
  • Valve Housings (AREA)
EP89305711A 1988-09-30 1989-06-07 Vanne de commande à plusieurs étages Withdrawn EP0361643A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1988129376U JPH0740780Y2 (ja) 1988-09-30 1988-09-30 多連セレクタバルブ
JP129376/88U 1988-09-30

Publications (1)

Publication Number Publication Date
EP0361643A1 true EP0361643A1 (fr) 1990-04-04

Family

ID=15008052

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89305711A Withdrawn EP0361643A1 (fr) 1988-09-30 1989-06-07 Vanne de commande à plusieurs étages

Country Status (2)

Country Link
EP (1) EP0361643A1 (fr)
JP (1) JPH0740780Y2 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2362944A (en) * 1942-06-30 1944-11-14 Hydraulic Control Engineering Control valve for hydraulic systems
US2710628A (en) * 1954-10-11 1955-06-14 New York Air Brake Co Control valve with inherent circuit protection
US3162095A (en) * 1962-03-26 1964-12-22 New York Air Brake Co Fluid distribution system
US3216443A (en) * 1963-03-11 1965-11-09 Parker Hannifin Corp Multiple spool valve assembly
GB2107434A (en) * 1981-08-06 1983-04-27 Toshiba Machine Co Ltd Multiple control valves

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57157804A (en) * 1981-03-25 1982-09-29 Mazda Motor Corp Multi-valve construction
JPS5821007A (ja) * 1981-07-29 1983-02-07 Uchida Yuatsu Kiki Kogyo Kk 多連形切換弁装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2362944A (en) * 1942-06-30 1944-11-14 Hydraulic Control Engineering Control valve for hydraulic systems
US2710628A (en) * 1954-10-11 1955-06-14 New York Air Brake Co Control valve with inherent circuit protection
US3162095A (en) * 1962-03-26 1964-12-22 New York Air Brake Co Fluid distribution system
US3216443A (en) * 1963-03-11 1965-11-09 Parker Hannifin Corp Multiple spool valve assembly
GB2107434A (en) * 1981-08-06 1983-04-27 Toshiba Machine Co Ltd Multiple control valves

Also Published As

Publication number Publication date
JPH0740780Y2 (ja) 1995-09-20
JPH0250577U (fr) 1990-04-09

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