US3278161A - Control system for hydraulic winches - Google Patents

Control system for hydraulic winches Download PDF

Info

Publication number
US3278161A
US3278161A US323523A US32352363A US3278161A US 3278161 A US3278161 A US 3278161A US 323523 A US323523 A US 323523A US 32352363 A US32352363 A US 32352363A US 3278161 A US3278161 A US 3278161A
Authority
US
United States
Prior art keywords
servo
control valve
control system
control
winch
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
US323523A
Other languages
English (en)
Inventor
Sandoy Harry
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.)
HYDRAULIK AS
Original Assignee
HYDRAULIK AS
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 HYDRAULIK AS filed Critical HYDRAULIK AS
Application granted granted Critical
Publication of US3278161A publication Critical patent/US3278161A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
    • B63B21/16—Tying-up; Shifting, towing, or pushing equipment; Anchoring using winches
    • 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
    • B66D2700/00—Capstans, winches or hoists
    • B66D2700/01—Winches, capstans or pivots
    • B66D2700/0125—Motor operated winches
    • B66D2700/0133—Fluid actuated

Definitions

  • This invention relates to control systems for hydraulic winches and in particular, is concerned with the manual control of such winches. Normally this control is effected by means of a control handle arranged on the said winch at the side of its manual control valve. However it is often desirable to be able to carry out the control from a position remote from said winch. It is then well-known to connect up a remote control system which transmits the movement from a control handle of a control column over to the manual control valve or its control handle.
  • An object of the invention is to provide a control system for hydraulic winches, wherein very little power is needed for operation, and wherein it is ensured that the manual control valve of the winch will always be found in the correct position in relation to the remote control handle, even in arbitrary intermediate positions.
  • the present invention consists in a control system for hydraulic winches, wherein a manual control valve of the winch is adapted to be brought into required positions for hoisting, stop and letting out by a hydraulic remote control, the hydraulic remote control system comprising a driving pump independent of the main circuit of the winch which supplies driving oil in separate circuit for displacement of the primary side in a servocontrol system, whose secondary side is connected to the control valve of the winch.
  • FIG. 1 is a perspective view of a control system for loading and unloading equipment on a ship, consisting of a cargo winch and two winches for topping and swinging the boom.
  • FIG. 2 is a section through a control column which is included in the system according to FIG. 1.
  • FIG. 3 is a section on a larger scale through a servoarrangement which is employed in the system according to FIGS. 1 and 2.
  • FIG. 4 shows a part of a section through the manual control valve.
  • the winch equipment includes an electric motor which drives an hydraulic pump 11 through a toothed wheel transmission 12 and a coupling 13.
  • the tube conduits 14, 15 run to and from the pump up to a cargo winch represented generally by 16, and from there to two combined topping and boom swinging winches 17 and 18 respectively, wherein only their manual control valves are illustrated.
  • the winches each have a control handle 19, which by a non-visible link arm mechanism is connected to the manual control slide in the interior of the valve housing 20.
  • a hydraulic cylinder 21 is arranged at the top of the valve housing.
  • the electric motor 10 in addition drives a servo-pump 22, which receives hydraulic driving medium from the supply conduit 14 through a conduit 23, and supplies driving medium under pressure to a conduit 24.
  • This conduit leads over to and branches otf to two control columns 25, 26, which are arranged at a position remote from the winches 16, 17 and 18, and which each have respective control handles 27 and 28.
  • the control column 25 having handle 27 serves as the remote control for the cargo winch 16, while the other control column 26 with its handle 28 serves as the remote control for the two topping and boom swinging winches 17 and 18.
  • the handle is arranged to be pivoted in a vertical direction as well as in a horizontal direction.
  • FIG. 2 A section through a control column is shown in FIG. 2.
  • the conduit 24 is led into the control column through a nipple 29 which is connected to a flexible high pressure pipe 30.
  • the servo-control valve 31 is reciprocable in the axial direction by means of a control rod 34, which is connected to a manual control handle 28 through a link arm connection not shown.
  • FIG. 3 A section through the servo-control valve 31 and the associated servo-cylinder 33 is shown in FIG. 3.
  • the flexible high pressure pipe is connected through a nipple 35 to a bore 36 which leads into a centrally situated annular cavity 37.
  • the piston rod 32 passes through the through bore 40 in the servo-control valve and thereby seals otf these three annular cavities 37, 38, 39 from each other.
  • the tWo annular cavities 38, 39 are in connection with a return conduit back to the pump 11 through channels not shown in FIG. 3.
  • each channel is provided with an opening 43, 44 respectively, arranged so that in a middle position, connection is obtained between the central annular cavity 37 and the annular cavities 33, 39.
  • one opening, for example opening 43 will come into selective connection only with the central annular cavity, while the other opening comes into selective connection only with one of the outer annular cavities 38, 39 and is no longer in communication with the central cavity. This action will be explained later.
  • the piston rod 32 runs axially through the servocylinder 33, which comprises a first chamber divided into two part-chambers 45, 46 by a piston 47 secured on the piston rod 32.
  • the axial channel 41 of the piston rod 32 discharges into the part-chamber through an opening 48, and the other axial channel 42 discharges into the other partchamber 46 through a second opening 4-9.
  • the servo-cylinder in addition includes a second chamber which is also divided into two part-chambers 50 and 51 by a piston 52 secured on the piston rod 32.
  • This piston in addition slides on a guide rod 53 having an inner bore 54, from which lead two small bores 55, 56 to each side of the piston 52, when this is located in the middle position. As soon as the piston is moved 3 out of the middle position, however one of these bores will be closed.
  • a conduit 57 leads from the part-chamber 50, and from the part-chamber 51 there leads a conduit 58, which conduits are led to the hydraulic cylinder 21 at the top of the housing of the manual control valve, the conduits 57, 58 being connected respectively to the upper side and the lower side of the piston 59 in cylinder 21 (see FIG. 4
  • the servo-pump 22 will supply driving medium through the central annular cavity 37 and over to both the annular cavities 38, 39 through openings 43, 44, when the handle 28, and with it the servo-control valve 31 also, are located at rest in the middle position, in this respect as seen in FIG. 3 the openings 43, 44 are sufficiently large to establish communication between the central cavity 37 and the cavities 38, 39 when the valve 31 is in its middle position. However, upon movement in either direction of the valve 31, one of the openings will be disconnected from the central cavity 37. Thus if the handle 28 is moved out of the middle position, for example to the left in FIG. 3, the opening 44 will be placed in selective connection with the annular cavity 37 and be out of communication with cavity 39 (the left cavity).
  • Opening 43 will be in communication with cavity 38 only this causes pressure medium to be fed only to the axial channel 42 and thereby to the part chamber 46 on the right side of the piston 47. This will move the piston rod 32 to the left. In this way the pressure medium is forced out of the left part-chamber 51, through the conduit 58 and to the cylinder 21, whose piston 59 is moved upwards.
  • the piston 59 has a rod which is connected to a manual control slide 65 to operate the same together with the piston 59. Thus when the piston 59 is moved upwards, the slide of the manual control valve is moved, for example, to the hoisting position.
  • control handles 27, 28 are provided with oppositely directed springs as well as the slide of the manual control valve which urge these parts towards the middle position.
  • an excess pressure valve in the form of a ball 60 in a bore 61.
  • the ball is normally pressed by a pressure spring 62 against its seating.
  • a suitable excess pressure for example about 20 kg./cm. the ball is lifted from its seating and allows the passage of oil to a bore 63 to one of the annular cavities 38, 39.
  • This return line is preferably eflected through a conduit 64, which passes over to the return conduit 15 of the main pump.
  • the lines 24, 64 form a separate fluid circuit for the servo-control valve 31, the servo cylinder 33 and the hydraulic cylinder 21.
  • the said manual control slide which is shown at 65 in FIG. 4, may be of the kind which is illustrated in Norwegian Patent No. 93,277.
  • a manual control valve of the Winch is adapted to be brought into required positions for hoisting, stopping, and letting out by a hydraulic remote control system
  • said hydraulic remote control system comprising a driving pump and a servo-control system for operating the manual control valve, said driving pump supplying driving fluid in a separate circuit to said servo-control system, said servo-control system including a displaceable primary stage which is driven by the driving fluid and a secondary stage controlled by the primary stage and adapted for connection to the manual control valve of the winch to operate the same and the winch thereby, said primary stage including a servo-control valve, the driving pump supplying driving fluid to the servo-control valve, a piston rod supporting said servo-control valve for axial displacement thereof, a cylinder having a driving piston, said cylinder receiving the piston rod for axial displacement therein in opposite directions such that movement of said piston rod causes movement of said piston in respectively opposite directions in either of which fluid for the adjustment of the control
  • the manual control valve comprises a slide axially displaceable in a housing and there is arranged on the valve housing coaxially with the slide a hydraulic cylinder with associated piston, the piston rod of which is connected to the slide.
  • the servo-control valve has three cavities, of which a middle one is connected with the pressure side of the driving pump and the other two with its return side, and the piston rod has two channels which on the one hand are connected with each side of the driving piston and on the other hand upon displacement of the servo-control valve the channels can be brought into connection with the central cavity and one of the other cavities respectively.
  • a control system according to claim 1 wherein the primary stage of the servo-control system further comprises an accompanying piston on said piston rod, movement of said accompanying piston supplying the driving fluid to the secondary stage for the adjustment of the manual control valve.
  • a control system comprising a Winch arrangement comprising a cargo winch together with two other winches, and two remote control columns each having a control handle, one handle serving for the remote control of the cargo winch, and the other serving for the control of both of the other two winches.
  • a control system wherein one control handle is movable in one plane while the other handle is movable in two mutually crossing planes, movements in the one crossing plane serving for control of one of the two winches, while the movement in the other crossing plane serving for the control of the other winch.
  • hydraulic remote control means comprising a manual control lever, pump means for supplying a pressure medium, and servo-control means coupled to said pump means and to the manual control lever for being the first means and has a centered position with respect 10 to the first means in which the servo-control means is at rest, said first means being displaceable by the manual control lever with respect to said support means to selectively open only one of said passages, said second means undergoing displacement in a direction by the opening of said selected one passage to return to the centered position thereof.
  • said second means delivers pressure medium upon its displacement for operating the control valve such that the direction of displacement of the second means controls the direction of drive of the hydraulic Winch.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Jib Cranes (AREA)
  • Servomotors (AREA)
  • Laminated Bodies (AREA)
  • Control And Safety Of Cranes (AREA)
US323523A 1962-11-13 1963-11-13 Control system for hydraulic winches Expired - Lifetime US3278161A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO146405A NO118453B (enrdf_load_stackoverflow) 1962-11-13 1962-11-13

Publications (1)

Publication Number Publication Date
US3278161A true US3278161A (en) 1966-10-11

Family

ID=19908723

Family Applications (1)

Application Number Title Priority Date Filing Date
US323523A Expired - Lifetime US3278161A (en) 1962-11-13 1963-11-13 Control system for hydraulic winches

Country Status (8)

Country Link
US (1) US3278161A (enrdf_load_stackoverflow)
DE (1) DE1292351B (enrdf_load_stackoverflow)
DK (1) DK111105B (enrdf_load_stackoverflow)
ES (1) ES293330A1 (enrdf_load_stackoverflow)
FI (1) FI42127B (enrdf_load_stackoverflow)
GB (1) GB974731A (enrdf_load_stackoverflow)
NL (1) NL145196B (enrdf_load_stackoverflow)
NO (1) NO118453B (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10869902B2 (en) 2004-09-28 2020-12-22 Atrium Medical Corporation Cured gel and method of making
CN115258884A (zh) * 2022-07-04 2022-11-01 江苏省方正电梯有限公司 一种无机房电梯的井道布置结构

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2258307A (en) * 1938-11-18 1941-10-07 Vickers Inc Power transmission
US2823897A (en) * 1954-12-13 1958-02-18 Nordberg Manufacturing Co Positive hoist control
GB969019A (en) * 1961-03-15 1964-09-09 John Milton Anthony Blatchford Improvements in or relating to mobile cranes and similar vehicles
US3154199A (en) * 1962-09-04 1964-10-27 Mccabe Powers Body Company Single boom derrick units

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE370518C (de) * 1923-03-03 Franz Jordan Dr Ing Winde mit durchlaufendem Motor, insbesondere fuer Aufzuege
GB487909A (en) * 1936-05-11 1938-06-28 Mercier Jean Improvements in or relating to jacks
FR1030948A (fr) * 1951-01-12 1953-06-18 Levman B Krebs Perfectionnements apportés aux engins de levage à moteur thermique, notamment à ceux résultant de la modernisation d'anciens engins de levage à bras

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2258307A (en) * 1938-11-18 1941-10-07 Vickers Inc Power transmission
US2823897A (en) * 1954-12-13 1958-02-18 Nordberg Manufacturing Co Positive hoist control
GB969019A (en) * 1961-03-15 1964-09-09 John Milton Anthony Blatchford Improvements in or relating to mobile cranes and similar vehicles
US3154199A (en) * 1962-09-04 1964-10-27 Mccabe Powers Body Company Single boom derrick units

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10869902B2 (en) 2004-09-28 2020-12-22 Atrium Medical Corporation Cured gel and method of making
CN115258884A (zh) * 2022-07-04 2022-11-01 江苏省方正电梯有限公司 一种无机房电梯的井道布置结构
CN115258884B (zh) * 2022-07-04 2024-04-16 江苏省方正电梯有限公司 一种无机房电梯系统

Also Published As

Publication number Publication date
GB974731A (en) 1964-11-11
DE1292351B (de) 1969-04-10
ES293330A1 (es) 1964-01-01
NL145196B (nl) 1975-03-17
FI42127B (enrdf_load_stackoverflow) 1970-02-02
DK111105B (da) 1968-06-04
NO118453B (enrdf_load_stackoverflow) 1969-12-29

Similar Documents

Publication Publication Date Title
US3476266A (en) Binary-code controlled apparatus
US2822094A (en) Bridge manipulator
US3537686A (en) Hoist and balancing apparatus
US2441925A (en) Centering device
US3241687A (en) Mechanical handling apparatus
US2501483A (en) Hydraulic power system
US3310335A (en) Load lifting mechanism
US3334865A (en) Hydraulic winch with self-clamping jaws
US3259352A (en) Loading balancer assembly
US3610433A (en) Hydraulically operable extendable boom
US3278161A (en) Control system for hydraulic winches
US4518061A (en) Translating mobile work platform
US3744335A (en) Joystick type control device with displacement feel
US3260164A (en) X-ray apparatus
US2977769A (en) Control for mobile aerial tower
US3618897A (en) Constant tensioning system
US3126706A (en) Hydraulically operated- unit
US3082746A (en) Fluid operated ram
US2898889A (en) Mechanically-limited, electrically operated hydraulic valve system for aircraft controls
US3554091A (en) Coupling and power control device
US2613903A (en) Dual load balancing hoist
US2826178A (en) Hydraulic control valve mechanism
US2949741A (en) Mobile aerial tower and control
US2450481A (en) Duplex control valve device
US3776101A (en) Control device for controlling a pneumatic piston