US3819156A - Hoist drum control - Google Patents

Hoist drum control Download PDF

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Publication number
US3819156A
US3819156A US00382544A US38254473A US3819156A US 3819156 A US3819156 A US 3819156A US 00382544 A US00382544 A US 00382544A US 38254473 A US38254473 A US 38254473A US 3819156 A US3819156 A US 3819156A
Authority
US
United States
Prior art keywords
drum
brake
torque
cable
converter
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
US00382544A
Other languages
English (en)
Inventor
D Sieracki
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.)
Manitowoc Co Inc
Original Assignee
Manitowoc Co Inc
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 Manitowoc Co Inc filed Critical Manitowoc Co Inc
Priority to US00382544A priority Critical patent/US3819156A/en
Priority to CA197,715A priority patent/CA984373A/en
Priority to GB1868874A priority patent/GB1422100A/en
Priority to NL7405855A priority patent/NL7405855A/xx
Priority to DE2421319A priority patent/DE2421319A1/de
Priority to SE7405947A priority patent/SE378403B/xx
Priority to FR7415478A priority patent/FR2238664B1/fr
Priority to IT22283/74A priority patent/IT1010409B/it
Application granted granted Critical
Publication of US3819156A publication Critical patent/US3819156A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B66D1/14—Power transmissions between power sources and drums or barrels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
    • B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
    • B66D5/24—Operating devices
    • B66D5/26—Operating devices pneumatic or hydraulic
    • 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
    • B66D2700/0158—Hydraulically controlled couplings or gearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D2700/00—Capstans, winches or hoists
    • B66D2700/03—Mechanisms with latches or braking devices in general for capstans, hoists or similar devices as well as braking devices actuated electrically or by fluid under pressure
    • B66D2700/035—Fluid operated braking devices

Definitions

  • ABSTRACT A hoist cable drum control having a spring set, normally engaged drum brake and a variable torque converter for driving the drum, in which a control device initiates cable take-up and slips the brake, and drum rotation is sensed to thereafter disengage the brake. Control forces on the converter and the brake are proportional so that as torque is reduced the brake comes on smoothly. Cable is payed off thedrum through a reverse driving hydraulic motor actuated simultaneously with release of the brake and capable of being overridden by the torque converter to control lowering movement. A clutch engaged by initial operation of the control device permits multiple drums to be driven by the converter.
  • Lifting machinery such as cranes utilize cable, often rigged as multi-part line, for positioning booms and lifting a load relative to a boom with the cable being payed out or taken in on powered hoist drums.
  • hoist drums are selectivelyclutched to a source of power which, preferably, can be controlled to deliver variable torque for speed and load flexibility.
  • drum brakes are normally provided to lock the drums so as to hold the cable when under high tensions loads.
  • Another object is to provide a hoist drum control as described above which gives one lever control of a drum from braking to full power under all load conditrons.
  • FIG. I is a schematic of a control system embodying the present invention.
  • FIG. 2 is a diagram showing alternate positions of one of the control levers otherwise appearing in FIG. 1;
  • FIG. 3 is a fragmentary section of a portion of the brake structure embodied in the control system of FIG. I.
  • FIG. 1 there is schematically shown a pair of cable hoist drums l and 11 suitable for use in a crane adapted to be driven, from an engine 12 supplying a source of torque, under the control of a system embodying the invention.
  • the drums I0, 11 are held 2 I normally locked by band brakes l3 and 14, respectively, including (see FIG. 3) brake shoes 21 engaging a cylindrical portion of each drum and mounted on a band 22 anchored at one end by a link 23 and operated at the other end by an assembly including a bell crank 24.
  • the brake is normally spring set by a heavy spring 28, urging the bell crank 24 clockwise, positioned in an actuator 30, in this case pneumatic, which opposes the force of the spring 28 when supplied with air under pressure. With the force of the spring 28 removed, a take-up spring 29 swings the bell crank 24 counterclockwise so as to release the brake.
  • the brake 13 is self-energizing against rotation of the drum 10 in a clockwise direction, as seen in FIG. 3, which is the direction of drum rotation that pays cable out. Rotation of the drum in the opposite, cable take-up, counterclockwise direction will tend to unwrap the brake band 22 so that, even with the brake on, the drum can be driven to take in cable and the brake will slip.
  • the brakes l3, 14 are alike in function and actuation.
  • the drums 10, 11 are driven through a converter 35 interposed between the engine 12 and thedrums.
  • the converter preferably of the type shown in more detail in US. Pat. Nos. 3,221,896 and 3,335,568, issued Dec. 7, 1965 and Aug. 15, 1967, respectively, includes a control member sleeve 36 interposed between a driving impeller 37 and a torque output turbine 38.
  • the impeller 37 is mechanically connected to the engine 12 and the turbine 38 is mechanically connected to the drums 10, 11.
  • the sleeve 36 can be shifted from the first position through an infinitely variable range of positions in which smoothly increasing amounts of torque are transmitted from the engine 12 to the drums.
  • a spring 41 normally holds the sleeve in its first block position and a pneumatic actuator 42 opposes the spring and, when supplied with air under pressure, positions the sleeve.
  • a pneumatic actuator 42 opposes the spring and, when supplied with air under pressure, positions the sleeve.
  • the engine 12 is normally operated at a constant speed in a direction to drive the drums, when torque is applied through the converter 35, in the direction to take up cable and thus lift whatever load is attached to the cable.
  • each of the drums 10, 11 is associated with a respective control device in the form of a manually positionable lever 43 or 44 each operating a throttling valve 45 for applying proportional forces through the actuators 30 and 42, and each drum is coupled to a respective rotation sensor 46 that, when slight rotation of the drum in the cable take-up direction is detected, completes an. electrical circuit to an associated solenoid valve 47 which is normally closed blocking air flow to, and thus force application by, the associated actuator 30.
  • the operator of the control system can move one of the levers 43, 44 to gradually open the associated valve 45 and apply a gradually increasing force through the actuator 42 to slide the sleeve 36 and thus impose increasing torque from the engine 12 onto the associated drum.
  • the drum When the torque exceeds the torque load of the cable, the drum will begin to rotate in the cable take-up direction, slipping the associated brake 13 or 14.
  • the threshold of the associated rotation sensor 46 preferably when the drum rotates at about 0.] rpm, the sensor engergizes and opens the associated valve 47 to apply force through the actuator 30 that releases the associated brake 13 or 14. The speed of the lift is thereafter dependent upon the position of the lever 43 or 44 and thus the position of the sleeve 36.
  • the lever 43 or 44 being operated is moved to gradually close the associated valve 45, reducing the force through the actuator 42 and thus moving the sleeve 36 to smoothly reduce the torque on the drum.
  • This downward modulation of air pressure also affects the associated brake actuator 30 so that, as the torque is reduced, the associated brake 13 or 14 is gradually allowed to come on under the urging of a spring 28. In this way, the drum comes to a smooth, fully braked stop with no shock load-producing jerkiness.
  • a hydraulic motor 55 is coupled to the clutches 51 on the output side of the converter 35 and is operated to drive the drums 10, 11 in a direction to pay out cable.
  • Fluid under pressure is supplied to the motor 55 through a normally closed valve 56 opened by a pneumatic actuator 57 controlled by a solenoid operated valve 58 which is energized by depressing one of a pair of pushbuttons 59 on the respective control levers 43, 44. Depressing either one of the pushbuttons 59 also releases the associated brakes 13, 14 by energizing a solenoid 61 controlling a normally closed valve 62 so as to apply air pressure to the associated actuator 30.
  • brake bypass valves 65 are associated with each of the actuators 30 so as to permit operation of a selected one of the actuators and overcome the force of the brake setting spring 28. Brake control can then be had by a conventional foot pedal connected to the bell crank 24 by a link 66 (see FIG. 3).
  • portions of the pneumatic circuit are isolated by check valve, Y-connectors 67.
  • sensors 68 are provided to disable the cable payout circuits unless there is a desired minimum pressure available in the pneumatic lines. If desired, an additional interlock can disable the control circuits when the engine 12 is not running.
  • the hoist drum control just discussed gives automatic drum braking and yet provides smooth transition, without shock loading, between the drum being locked and driven. Control of the selected drum is through a single lever so as to greatly simplify drum operation, and automatic clutching permits a plurality of drums to be driven from a single power source.
  • a control for a drum holding cable intended for tension loading comprising, in combination, a source of driving torque, a converter interposed between said source and said drum, said converter having a sleeve interposed between driving elements which is movable from a first blocking position in which no torque is transmitted to said drum through a range of positions in which smoothly increasing amounts of torque are transmitted to the drum, a brake for said drum which is self-energizing in the direction of drum rotation that pays cable out and which is capable of slipping in the opposite direction of drum rotation, means for normally holding said brake engaged, a first actuator for opposing said means and releasing said brake, means for normally holding said sleeve in said first position, a second actuator for opposing said last named means and moving said sleeve from said first position through said range of positions, a control device which is manually moved for applying proportional forces through said first and second actuators, a rotation sensor coupled to said drum for detecting more than slight rotation of the drum in the direction to take up cable, and means interposed between said control device and said
US00382544A 1973-07-25 1973-07-25 Hoist drum control Expired - Lifetime US3819156A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US00382544A US3819156A (en) 1973-07-25 1973-07-25 Hoist drum control
CA197,715A CA984373A (en) 1973-07-25 1974-04-17 Hoist drum control
GB1868874A GB1422100A (en) 1973-07-25 1974-04-29 Hoist drum in combination with a control system therefor
NL7405855A NL7405855A (nl) 1973-07-25 1974-05-01 Besturingsinrichting voor een hijstrommel.
DE2421319A DE2421319A1 (de) 1973-07-25 1974-05-02 Steuervorrichtung fuer seiltrommeln
SE7405947A SE378403B (xx) 1973-07-25 1974-05-03
FR7415478A FR2238664B1 (xx) 1973-07-25 1974-05-03
IT22283/74A IT1010409B (it) 1973-07-25 1974-05-03 Sistema di comando per tamburo di sollevamento di apparecchi solle vatori

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00382544A US3819156A (en) 1973-07-25 1973-07-25 Hoist drum control

Publications (1)

Publication Number Publication Date
US3819156A true US3819156A (en) 1974-06-25

Family

ID=23509434

Family Applications (1)

Application Number Title Priority Date Filing Date
US00382544A Expired - Lifetime US3819156A (en) 1973-07-25 1973-07-25 Hoist drum control

Country Status (8)

Country Link
US (1) US3819156A (xx)
CA (1) CA984373A (xx)
DE (1) DE2421319A1 (xx)
FR (1) FR2238664B1 (xx)
GB (1) GB1422100A (xx)
IT (1) IT1010409B (xx)
NL (1) NL7405855A (xx)
SE (1) SE378403B (xx)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3934856A (en) * 1973-06-14 1976-01-27 Fullerton, Hodgart & Barclay Ltd. Mine hoists
US3988008A (en) * 1975-10-23 1976-10-26 The Manitowoc Company, Inc. Power lowering system
US4053999A (en) * 1974-09-23 1977-10-18 Kelley Charles S Automatic grab crane
EP0037977A1 (de) * 1980-04-02 1981-10-21 Erich Sennebogen Kran
US4448398A (en) * 1982-03-01 1984-05-15 Garlock Equipment Company Winch control system
US4516755A (en) * 1982-06-02 1985-05-14 Kabushiki Kaisha Komatsu Seisakusho Hydraulic winch control system
US4549640A (en) * 1982-01-28 1985-10-29 Hitachi Construction Machinery Co., Ltd. Operation system for hoisting device
US4884783A (en) * 1988-02-12 1989-12-05 Thorn, Inc. Hoist with oil cooled brake
US5167400A (en) * 1989-06-23 1992-12-01 Plateformes Et Structures Oceaniques Has invented certain and useful improvements in control device for lifting winches, in particular for drilling rigs
US5671912A (en) * 1994-08-10 1997-09-30 Ederer Corporation Method & apparatus for providing low speed safety braking for a hoist system
CN107188061A (zh) * 2016-03-15 2017-09-22 辽宁陆海石油装备研究院有限公司 一种气动载人绞车控制系统
CN111170190A (zh) * 2020-04-11 2020-05-19 山东科瑞机械制造有限公司 一种钻机绞车盘刹集成控制方法及装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2945675A (en) * 1957-10-24 1960-07-19 California Research Corp Drawworks
US3125819A (en) * 1964-03-24 Control arrangement for dredge ladder
US3158355A (en) * 1962-01-08 1964-11-24 Wilson Mfg Co Inc Multi-drum winch
US3477695A (en) * 1967-02-20 1969-11-11 Potain Sa Soc Lifting winches

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3125819A (en) * 1964-03-24 Control arrangement for dredge ladder
US2945675A (en) * 1957-10-24 1960-07-19 California Research Corp Drawworks
US3158355A (en) * 1962-01-08 1964-11-24 Wilson Mfg Co Inc Multi-drum winch
US3477695A (en) * 1967-02-20 1969-11-11 Potain Sa Soc Lifting winches

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3934856A (en) * 1973-06-14 1976-01-27 Fullerton, Hodgart & Barclay Ltd. Mine hoists
US4053999A (en) * 1974-09-23 1977-10-18 Kelley Charles S Automatic grab crane
US3988008A (en) * 1975-10-23 1976-10-26 The Manitowoc Company, Inc. Power lowering system
DE2647536A1 (de) * 1975-10-23 1977-04-28 Manitowoc Co Lastabsenkvorrichtung fuer ein hebegeraet
FR2328653A1 (fr) * 1975-10-23 1977-05-20 Manitowoc Co Appareil commande de descente d'une charge
EP0037977A1 (de) * 1980-04-02 1981-10-21 Erich Sennebogen Kran
US4549640A (en) * 1982-01-28 1985-10-29 Hitachi Construction Machinery Co., Ltd. Operation system for hoisting device
US4448398A (en) * 1982-03-01 1984-05-15 Garlock Equipment Company Winch control system
US4516755A (en) * 1982-06-02 1985-05-14 Kabushiki Kaisha Komatsu Seisakusho Hydraulic winch control system
US4884783A (en) * 1988-02-12 1989-12-05 Thorn, Inc. Hoist with oil cooled brake
US5167400A (en) * 1989-06-23 1992-12-01 Plateformes Et Structures Oceaniques Has invented certain and useful improvements in control device for lifting winches, in particular for drilling rigs
US5671912A (en) * 1994-08-10 1997-09-30 Ederer Corporation Method & apparatus for providing low speed safety braking for a hoist system
CN107188061A (zh) * 2016-03-15 2017-09-22 辽宁陆海石油装备研究院有限公司 一种气动载人绞车控制系统
CN111170190A (zh) * 2020-04-11 2020-05-19 山东科瑞机械制造有限公司 一种钻机绞车盘刹集成控制方法及装置

Also Published As

Publication number Publication date
FR2238664A1 (xx) 1975-02-21
DE2421319A1 (de) 1975-02-20
GB1422100A (en) 1976-01-21
SE378403B (xx) 1975-09-01
FR2238664B1 (xx) 1977-10-28
SE7405947L (xx) 1975-01-26
CA984373A (en) 1976-02-24
NL7405855A (nl) 1975-01-28
IT1010409B (it) 1977-01-10

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