US3645295A - Hydraulic multistage control slide valve - Google Patents

Hydraulic multistage control slide valve Download PDF

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Publication number
US3645295A
US3645295A US26647A US3645295DA US3645295A US 3645295 A US3645295 A US 3645295A US 26647 A US26647 A US 26647A US 3645295D A US3645295D A US 3645295DA US 3645295 A US3645295 A US 3645295A
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United States
Prior art keywords
levers
shaft
slide
valve
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.)
Expired - Lifetime
Application number
US26647A
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English (en)
Inventor
Edmund Nowak
Jerzy Korchow
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.)
ZAKLAD DOSWIADCZALNY PRAS AUTO
Original Assignee
ZAKLAD DOSWIADCZALNY PRAS AUTO
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
Priority claimed from PL133255A external-priority patent/PL62238B1/pl
Application filed by ZAKLAD DOSWIADCZALNY PRAS AUTO filed Critical ZAKLAD DOSWIADCZALNY PRAS AUTO
Application granted granted Critical
Publication of US3645295A publication Critical patent/US3645295A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/53—Mechanical actuating means with toothed gearing
    • 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
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/02—Servomotor systems with programme control derived from a store or timing device; Control devices therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
    • F16K31/363—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor the fluid acting on a piston
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/52—Mechanical actuating means with crank, eccentric, or cam
    • F16K31/524—Mechanical actuating means with crank, eccentric, or cam with a cam
    • F16K31/52475—Mechanical actuating means with crank, eccentric, or cam with a cam comprising a sliding valve
    • F16K31/52483—Mechanical actuating means with crank, eccentric, or cam with a cam comprising a sliding valve comprising a multiple-way sliding valve
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/43—Programme-control systems fluidic
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/43—Programme-control systems fluidic
    • G05B19/46—Programme-control systems fluidic hydraulic
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/3584—Inflatable article [e.g., tire filling chuck and/or stem]
    • Y10T137/3662—With gauge or indicator
    • Y10T137/3693—Selectively connected
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86389—Programmer or timer
    • Y10T137/86405—Repeating cycle
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86574—Supply and exhaust
    • Y10T137/86622—Motor-operated
    • Y10T137/8663—Fluid motor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86574—Supply and exhaust
    • Y10T137/8667—Reciprocating valve
    • Y10T137/86694—Piston valve
    • Y10T137/8671—With annular passage [e.g., spool]

Definitions

  • HYDRAULIC MULTISTAGE CONTROL SLIDE VALVE Inventors: Edmund Nowak; Jerzy Korchow, both of Warsaw, Tru Assignee: Zaklad Doswiadczalny Pras Automatycznych Hydomat pny zakladach Mechanicznych Tarnow, Warsaw. Poland Filed: Apr. 8, 1970 Appl. No.: 26,647
  • ABSTRACT A hydraulic spool-type control valve has a slide shifiablc in opposite directions to connect hydraulic devices with a source of fluid, and a drive for the slide including a pair of levers bearing on opposite ends of the slide in opposing directions and controlled by respective cams synchronously driven by a controlled-flow hydraulic motor.
  • This invention relates to a hydraulic multiple-stage control slide valve provided with a ram-drive unit, composed of two alternately, acting pressure levers on opposite sides of the ram, controlled by means of one or more coupled shafts provided with adjustable cam rings.
  • hydraulic control slide valves or spool valves are employed.
  • hydraulic multistage control slide valves are employed.
  • the main unit of such a hydraulic control slide valve is the ram or plunger which is shifted in a reciprocating manner in the cylinder thus opening and closing the appropriate flow conduits.
  • control slide valves of this kind is poor reliability of operation of the coupling of the electric system with the hydraulic system, the system being limited to a switching rate not exceeding three to five thousand switch operations per hour and the relatively high costs connected with the installation of complex electric appliances.
  • control slide valves of this latter type is the lack of reliability of operation, since in a case of jamming of the ram, e.g., due to impurities in the oil, the force of the restoring spring is too small to overcome the resistance to the ram movement.
  • the force exerted on the ram in its movement overcoming the resistance of the spring must be, by many times, greater than the force of the travel of the ram.
  • the object of this invention is the elimination of the abovementioned disadvantages and the provision of a multistage hydraulic control valve, which is distinguished by a high reliability of operation and, at the same time, by a relatively simple and compact design and the easy setting up and changing of the working cycle controlled by the hydraulic control slide valve.
  • a hydraulic or hydraulic-mechanical system for instance a hydraulic motor with a governor for the flow speed of fluid, enabling a stepless change of rotational speed of the shaft or shafts.
  • the multistage control slide valve is characterized by a simple design and, moreover, enables setting up 'of any control program of the working process being regulated by the ram.
  • Such a setting up consists, namely, in an appropriate adjustment of the cam rings on the shaft or coupled shafts, which enables any arrangement of the beginning and the termination of the working cycle to be established.
  • FIG. 1 shows the hydraulic control slide valve according to the invention in a section along the axis of the ram
  • FIG. 2 shows a drive having coupled shafts
  • FIG. 3 the multistage hydraulic control slide valve in a section along the axis of one of the coupled shafts.
  • the hydraulic control slide valve consists of a cylinder 1 provided with a set of ports or conduits 2 connected to a feed conduit or port 3 and to outflow conduits or ports 4 and of the ram, spool or plunger 5 slidably mounted inside this cylinder 1, provided with connecting chambers 6.
  • the slide or ram 5 is shifted in appropriate moments of the working cycle in a reciprocating way, thus establishing a connection of appropriate ports 2, 4 by means of chambers 6.
  • a mechanism for shifting the ram consisting of two pressure levers 7 and 8, rotatably mounted on the axles or fulcrum shafts 9 and 10 or on one shaft, which levers act in an alternating way on the ram on its both opposite ends or sides,
  • a single shaft or two mutually coupled shafts 11 and 12 are employed, driven within rotary movement with controllable, preferably stepless turning speed and provided with rings 13 with earns 14 clamped on these shafts.
  • the cams 14 cooperate preferably with disks 15 (cam-follower rollers) rotatably mounted on ends of the levers 7 and 8, which are provided on their other ends with similar rotatably mounted disks or rollers 16 cooperating with end surfaces of the ram 5.
  • disks 15 cam-follower rollers
  • a mechanism consisting of a hydraulic motor 17, with a speed governor for the liquid flow 18 which enables a stepless change of turning speed of the motor; the worm 19 mounted on the shaft of the motor 17 meshes with a worm wheel 20 carrying a gear 21,22, whose wheel 21 is keyed on the shaft 1 l, and the wheel 22 on the shaft 12 coupled with the latter.
  • the multistage control slide valve as illustrated by way of example in FIG. 3 consists of a set of six cylinders la, lb, 1c, 1d, le, If with appropriate rams (not shown) which are moved in a reciprocating way by means of a set of levers 7a, 7b, 7c and oppositely acting levers (not shown).
  • clamping rings 13a, 13b For controlling these levers are used clamping rings 13a, 13b, with cams 14a, 14b, mounted on shafts 11 and 12, only the former being illustrated.
  • the setting up of the proper length of the working cycle is obtained by proper regulation of the liquid flow through the hydraulic motor 17 by means of the speed governor 18.
  • the levers 71, 7b...7f etc. controlled by cams 14a, l4b...l4f cause the appropriately synchronized shifting of rams in the cylinders la, lb... if. and thus, the controlling of wgrkigg elements, according to the required program.
  • the holding of the ram in a reversed position is obtained by a pressure generated in the flow chamber.
  • control slide valve is characterized by a simple and compact design and, thus, small dimensions. It can be employed particularly in controlling hydraulic units of various machines and technical installations.
  • a hydraulic control valve comprising a valve housing formed with a cylinder having ports connectable in hydraulic circuit; a linearly axially shiftable elongated slide receivable in said cylinder and shiftable in opposite directions to control the flow of fluid in said hydraulic circuit; respective levers pivotal about mutually parallel axes transverse to said slide and engageable with one extremity of each lever against a respective end of said slide; shaft means including at least one shaft journaled in said housing; and respective cams mounted on said shaft means and angularly adjustable relative thereto and acting upon other extremities of the respective levers for displac- 3.
  • each of said levers is journaled on a respective fulcrum shaft intermediate its extremities, said fulcrum shafts being mutually parallel and parallel to said shaft means, each of said levers being provided at its one extremity with a roller bearing upon a respective end of said slide and at its other extremity with a cam-follower roller, said shaft means comprises a pair of mutually parallel transversely spaced cam shafts parallel to said fulcrum shafts, said cams each include a respective ring surrounded and adapted to be tightened against the respective cam shaft, each of said rings being provided with a projection adapted to displace the respective cam follower roller, and said valve further comprising a gear transmission operatively connecting said cam shafts for synchronous rotation, a worm drivingly connected with said gear transmission, a hydraulic motor connected to said worm for rotating same, and adjustable flow control means connected to said motor for setting a selected rate of operation thereof.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Fluid Mechanics (AREA)
  • Hydraulic Motors (AREA)
  • Mechanically-Actuated Valves (AREA)
  • Multiple-Way Valves (AREA)
US26647A 1969-04-28 1970-04-08 Hydraulic multistage control slide valve Expired - Lifetime US3645295A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL133255A PL62238B1 (es) 1969-04-28

Publications (1)

Publication Number Publication Date
US3645295A true US3645295A (en) 1972-02-29

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US26647A Expired - Lifetime US3645295A (en) 1969-04-28 1970-04-08 Hydraulic multistage control slide valve

Country Status (8)

Country Link
US (1) US3645295A (es)
JP (1) JPS496401B1 (es)
AT (1) AT312386B (es)
BE (1) BE749585A (es)
CH (1) CH520274A (es)
FR (1) FR2045383A5 (es)
GB (1) GB1303828A (es)
NL (1) NL7005487A (es)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2574897A1 (fr) * 1984-12-14 1986-06-20 Festo Kg Distributeur
US20120104302A1 (en) * 2010-10-28 2012-05-03 Hon Hai Precision Industry Co., Ltd. Control valve

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH578794A5 (es) * 1974-11-19 1976-08-13 Bbc Brown Boveri & Cie
DE3424010A1 (de) * 1984-06-29 1986-01-02 Schubert, Jürgen, 6331 Schöffengrund Schraube fuer gasfoermige oder fluessige medien, insbesondere luftschraube
AT399026B (de) * 1992-10-13 1995-03-27 Avl Verbrennungskraft Messtech Vorrichtung zur steuerung und/oder bewegung von fluiden

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2574897A1 (fr) * 1984-12-14 1986-06-20 Festo Kg Distributeur
US20120104302A1 (en) * 2010-10-28 2012-05-03 Hon Hai Precision Industry Co., Ltd. Control valve
US8622087B2 (en) * 2010-10-28 2014-01-07 Fu Tai Hua Industry (Shenzhen) Co., Ltd. Control valve

Also Published As

Publication number Publication date
GB1303828A (es) 1973-01-24
BE749585A (fr) 1970-10-01
FR2045383A5 (es) 1971-02-26
AT312386B (de) 1973-12-27
DE2019247A1 (de) 1970-11-19
JPS496401B1 (es) 1974-02-14
CH520274A (de) 1972-03-15
NL7005487A (es) 1970-10-30

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