GB1147303A - Controller for pneumatically-operated balancing hoists - Google Patents

Controller for pneumatically-operated balancing hoists

Info

Publication number
GB1147303A
GB1147303A GB30641/67A GB3064167A GB1147303A GB 1147303 A GB1147303 A GB 1147303A GB 30641/67 A GB30641/67 A GB 30641/67A GB 3064167 A GB3064167 A GB 3064167A GB 1147303 A GB1147303 A GB 1147303A
Authority
GB
United Kingdom
Prior art keywords
air
hoist
passage
diaphragm
load
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
Application number
GB30641/67A
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.)
GKN Service UK Ltd
Original Assignee
Birfield Engineering 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 Birfield Engineering Ltd filed Critical Birfield Engineering Ltd
Publication of GB1147303A publication Critical patent/GB1147303A/en
Expired legal-status Critical Current

Links

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
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/02—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member
    • F15B15/06—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member for mechanically converting rectilinear movement into non- rectilinear movement
    • F15B15/068—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member for mechanically converting rectilinear movement into non- rectilinear movement the motor being of the helical type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/02—Driving gear
    • B66D1/08—Driving gear incorporating fluid motors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D3/00—Portable or mobile lifting or hauling appliances
    • B66D3/18—Power-operated hoists
    • 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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/06—Servomotor systems without provision for follow-up action; Circuits therefor involving features specific to the use of a compressible medium, e.g. air, steam
    • 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
    • F16H—GEARING
    • F16H39/00—Rotary fluid gearing using pumps and motors of the volumetric type, i.e. passing a predetermined volume of fluid per revolution
    • F16H39/01—Pneumatic gearing; Gearing working with subatmospheric pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D2700/00—Capstans, winches or hoists
    • B66D2700/01—Winches, capstans or pivots
    • B66D2700/0125—Motor operated winches
    • B66D2700/0133—Fluid actuated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D2700/00—Capstans, winches or hoists
    • B66D2700/02—Hoists or accessories for hoists
    • B66D2700/026—Pulleys, sheaves, pulley blocks or their mounting
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40515—Flow control characterised by the type of flow control means or valve with variable throttles or orifices
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/42—Flow control characterised by the type of actuation
    • F15B2211/428—Flow control characterised by the type of actuation actuated by fluid pressure
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/615—Filtering means
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/635—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements
    • F15B2211/6355—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements having valve means
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/80—Other types of control related to particular problems or conditions
    • F15B2211/86—Control during or prevention of abnormal conditions
    • F15B2211/863—Control during or prevention of abnormal conditions the abnormal condition being a hydraulic or pneumatic failure
    • F15B2211/8633—Pressure source supply failure
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/80—Other types of control related to particular problems or conditions
    • F15B2211/875—Control measures for coping with failures
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/80—Other types of control related to particular problems or conditions
    • F15B2211/885—Control specific to the type of fluid, e.g. specific to magnetorheological fluid
    • F15B2211/8855—Compressible fluids, e.g. specific to pneumatics
    • 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
    • Y10T137/2278—Pressure modulating relays or followers
    • Y10T137/2409—With counter-balancing pressure feedback to the modulating device
    • 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
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2559—Self-controlled branched flow systems
    • Y10T137/2574—Bypass or relief controlled by main line fluid condition
    • Y10T137/2605—Pressure responsive
    • Y10T137/2607—With pressure reducing inlet valve
    • 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
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2559—Self-controlled branched flow systems
    • Y10T137/2574—Bypass or relief controlled by main line fluid condition
    • Y10T137/2605—Pressure responsive
    • Y10T137/2607—With pressure reducing inlet valve
    • Y10T137/261—Relief port through common sensing means

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
  • Control Of Fluid Pressure (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

1,147,303. Load balancing hoists. BIRFIELD ENG. Ltd. 4 July, 1967 [11 July, 1966], No. 30641/67. Heading B8B. [Also in Division G3] A pneumatically operated balancing hoist in which compressed air is supplied to a chamber at one side of a piston controlling axial movement of the hoist drum mounted on a ball nut and screw arrangement, is provided with an air supply controller including main and pilot air regulators 74, 78 and a piston or flexible diaphragm 148 therebetween, the diaphragm controlling main air supply to and from the hoist. Compressed air is supplied to the controller at 68 through a filter 72 and passes into a pilot passage 92 and a main passage 118. Pilot air then passes through the regulator 78, a trim valve 80, a diaphragm chamber 114, an auxiliary trim valve 82 and a vent line 22 to a manually operated control valve 24. Main air from the passage 118 passes through the main air regulator 74, a diaphragm chamber 124, past an air operated check valve 76 and through an inlet passage 77 leading to the hoist drum chamber. The control valve 24 can be manually set to a first position in which no pilot air is bled therefrom, whereupon full pilot air pressure and hence full main air pressure is applied to the hoist causing it to raise a heavy load, a second position in which a little air is bled off whereupon medium loads are lifted by the hoist, and a third position in which the air bleed is such that the hoist load is just balanced. In the latter case, a manual raising of the load reduces the main air pressure in the hoist drum chamber and below the diaphragm 148, whereupon the latter is depressed by the pilot air pressure causing a valve body 128 to be resiliently depressed to permit inflow of compressed air to the hoist drum chamber to balance the load in its elevated position. A manual lowering of the load causes an increased pressure in the hoist drum chamber and under the diaphragm 148, causing the latter to be lifted to raise a ball or cone headed link 154 from a vent passage 158 in the valve body 128, whereupon excess pressure is vented to atmosphere and the load is balanced in its lowered position. The pilot air regulator 78 comprises a screw adjuster 110 which through spring 108, flexible diaphragm 104 and stem 96 adjusts valve 98 controlling the pilot air flow. The stem 96 registers with a passage 106 in the diaphragm 104, through which excess air pressure is released to atmosphere if the adjuster is screwed down excessively. The check valve 76 comprises a spring biased plunger 162 which shuts off the passage 77 unless compressed air is supplied to the connector whereupon the main air is in communication with a chamber 170 in which a piston 168 coupled to the plunger 162 is adapted to move to open the passage 77.
GB30641/67A 1966-07-11 1967-07-04 Controller for pneumatically-operated balancing hoists Expired GB1147303A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US56429566A 1966-07-11 1966-07-11

Publications (1)

Publication Number Publication Date
GB1147303A true GB1147303A (en) 1969-04-02

Family

ID=24253919

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30641/67A Expired GB1147303A (en) 1966-07-11 1967-07-04 Controller for pneumatically-operated balancing hoists

Country Status (4)

Country Link
US (1) US3457837A (en)
DE (1) DE1531294B1 (en)
GB (1) GB1147303A (en)
SE (1) SE328106B (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE757251A (en) * 1969-10-08 1971-03-16 Ingersoll Rand Co PNEUMATIC COMPENSATION HOIST SAFETY SYSTEM
US3856266A (en) * 1970-02-24 1974-12-24 L Kendrick Balancing apparatus with servo relief valve
US3669411A (en) * 1970-03-26 1972-06-13 Lorne J Mckendrick Load balancer
US3675899A (en) * 1970-05-27 1972-07-11 Lorne J Mckendrick Hoist and balancing apparatus
US3758079A (en) * 1970-11-18 1973-09-11 Gardner Denver Co Control system for balancing hoist
US3791627A (en) * 1971-09-20 1974-02-12 Zimmerman D W Mfg Pneumatically-operated hoist with automatic control system
US3756563A (en) * 1971-12-01 1973-09-04 Zimmerman Mfg Ing D Apparatus for handling objects
SE420997B (en) * 1980-03-28 1981-11-16 Atlas Copco Ab PRESSURE AIR-DRIVE LIFT BLOCK
US4462571A (en) * 1982-02-24 1984-07-31 D. W. Zimmerman Mfg., Inc. Fluid-operated, load-handling apparatus
US4500074A (en) * 1983-03-23 1985-02-19 D. W. Zimmerman Mfg., Inc. Fluid-operated apparatus for handling and lifting loads
US4624277A (en) * 1985-10-03 1986-11-25 Harry Veite Pressure regulating and relief valve
DE3705370A1 (en) * 1987-02-20 1988-09-01 Bode & Co Geb ROTARY DRIVE FOR SWIVEL DOORS, ESPECIALLY ON VEHICLES
US5327926A (en) * 1992-12-28 1994-07-12 John A. Blatt Flow regulator
US5553832A (en) * 1993-03-12 1996-09-10 Knight Industries, Inc. Safety device for an air balancing hoist
US5439200A (en) * 1993-12-10 1995-08-08 Columbus Mckinnon Corporation Air lifting and balancing unit
US5522581A (en) * 1994-01-13 1996-06-04 Zimmerman International Corp. Balancing hoist and material handling system
US5848781A (en) * 1994-01-13 1998-12-15 Ingersoll-Rand Company Balancing hoist braking system
US8105008B2 (en) * 2007-07-10 2012-01-31 Raymond David Givens Pneumatic multi-weight balancing device
GB0921970D0 (en) * 2009-12-16 2010-02-03 Norgren Ltd C A Pressure regulator
DE102018102397A1 (en) 2018-02-02 2019-08-08 J.D. Neuhaus Holding Gmbh & Co. Kg Control valve arrangement for indirect pneumatic control

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1479386A (en) * 1918-10-18 1924-01-01 Cons Car Heating Co Fluid-pressure engine
GB403787A (en) * 1932-10-07 1934-01-04 Electro Mechanical Brake Compa Improvements relating to pressure reducing or controlling valves
US3313212A (en) * 1964-06-01 1967-04-11 Dow Chemical Co Magnetic-pneumatic control system
US3357443A (en) * 1965-03-15 1967-12-12 Grove Valve & Regulator Co Fluid pressure regulator
US3286989A (en) * 1965-10-19 1966-11-22 Ingersoll Rand Co Balancing hoist

Also Published As

Publication number Publication date
US3457837A (en) 1969-07-29
DE1531294B1 (en) 1970-07-30
SE328106B (en) 1970-09-07

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