US3836121A - Motor-driven hoist with protective braking system - Google Patents

Motor-driven hoist with protective braking system Download PDF

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Publication number
US3836121A
US3836121A US00265571A US26557172A US3836121A US 3836121 A US3836121 A US 3836121A US 00265571 A US00265571 A US 00265571A US 26557172 A US26557172 A US 26557172A US 3836121 A US3836121 A US 3836121A
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US
United States
Prior art keywords
drum
main
load
drive means
auxiliary
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
US00265571A
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English (en)
Inventor
C Jones
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.)
UNC NUCLEAR INDUSTRIES Inc A CORP OF
EDERER Inc
Original Assignee
Transfer System 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 Transfer System Inc filed Critical Transfer System Inc
Priority to US00265571A priority Critical patent/US3836121A/en
Priority to FR7322209A priority patent/FR2189302B3/fr
Priority to DE2331227A priority patent/DE2331227A1/de
Priority to JP48068842A priority patent/JPS4956349A/ja
Priority to IT68836/73A priority patent/IT986495B/it
Application granted granted Critical
Publication of US3836121A publication Critical patent/US3836121A/en
Assigned to UNC NUCLEAR INDUSTRIES, INC., A CORP OF DE reassignment UNC NUCLEAR INDUSTRIES, INC., A CORP OF DE CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). MARCH 29, 1983 Assignors: UNITED STATES INDUSTRIES INC
Assigned to PACIFIC NUCLEAR SYSTEMS, INC. reassignment PACIFIC NUCLEAR SYSTEMS, INC. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: TRANSFER SYSTEMS, INC.
Assigned to EDERER INCORPORATED reassignment EDERER INCORPORATED ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: PACIFIC NUCLEAR SYSTEMS, INC. A CORP OF WA
Assigned to OLD NATIONAL BANK OF WASHINGTON reassignment OLD NATIONAL BANK OF WASHINGTON SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: EDERER INCORPORATED
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
    • 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

Definitions

  • a motor dr1ven ho1st especially useful for movmg nu- Asslgneei Transfer Systems Incorporated, clear reactor fuel is described.
  • a principal feature is a North Haven, Connpositive locking system to prevent load dropping when [22] Filed: June 23 1972 a malfunction develops.
  • the hoist includes a main drum-supporting cable for the load and which is di- PP N05 265,571 rectly driven by a main hoist motor.
  • a worm wheel is coupled to the drum.
  • a mating worm is in turn driven 52 US. Cl. 254/ 254/ 254/ B by an auxiliary which has ihsufhcieht POWer 51 1111.
  • ditional features include directly driven auxiliary UNITED STATES PATENTS drums for simultaneously supplying electrical or air 117811134 11/1930 Shoemaker 242/158 R hoses to the load, and means for translating the drum g f 'x i while rotating same to maintain the drum cable 3:477:695 11/1969 Noly 254 150 filgs the load- 3,54l,888 11/1970 Hegar 254/170 Primary ExaminerRobert J.
  • a grapple is lowered from an overlying refueling platform into the reactor well to couple to the fuel element, which is underwater, and then the fuel element hoisted out of the reactor core and placed in a new core position or moved into an adjacent fuel storage pool. It is important both for safety reasons and to avoid cumbersome decontamination procedures to prevent dropping of the fuel load should a power failure develop.
  • Conventional hoists are often provided with dual braking systems to satisfy the foregoing requirement.
  • a typical system has the hoist motor driving a worm gear which in turn drives the cable drum.
  • a second braking system is provided by a disc brake connected to the drum shaft opposite to the motor.
  • the brake is kept open by air pressure to a spring-loaded cylinder. Interruption of power opens an electrical solenoid, which vents the air pressure causing the spring to activate the brake.
  • a principal object of the invention is a hoist provided with a safety braking system which is continuously operative to protect against load dropping throughout a wider range of possible malfunctions than was heretofore available.
  • Another object of the invention is a hoist system utilizing a drum-supported cable and providing a safety braking system which operates directly off the drum.
  • Still a further object is a hoist system combined with safety brake which incorporates auxiliary drums for supplying auxiliary cabling or hosing to the load.
  • Still another object is an improved hoist system with safety brake of reduced size and weight.
  • the main cable drum is driven directly by a main electrical motor. Coupled to the drum is worm gearing driven in turn by a smaller auxiliary electrical motor motor functions to maintain this second brake unlocked so long as the main hoist motor is operative. Should the latter fail, the worm gear motor cannot drive the drum and the brake is locked. Since the main drum is not directly driven through the worm, gearing losses are kept low.
  • additional drums are provided which are driven off of the main drum and can be used to simultaneously supply additional cabling or hosing to the main cable load. Still further, the entire system of main motor, main drum, auxiliary drums, and worm gearing and its auxiliary motor, are mounted for translation simultaneously with main drum rotation to maintain the depending cables without the necessity of additional sheaving aligned with the load.
  • FIG. 1 is an elevational side view of one form of hoisting apparatus in accordance with the invention
  • FIG. 2 is a partly cross-sectional, partly elevational side view of the hoist illustrated in FIG. 1, on an enlarged scale;
  • FIG. 3 is a partly cross-sectional, partly elevational end view of the hoist illustrated in FIG. 1, on a scale approximately the same as that of FIG. 2;
  • FIG. 4 is a diagrammatic detail view, also enlarged, illustrating the flexible coupling between the main and auxiliary drums.
  • the conventional reactor power station includes a reactor well containing within an underwater core assemblies of radioactive fuel elements, typically in the form of elongated configurations.
  • a movable refuelling platform or bridge On the reactor floor is provided a movable refuelling platform or bridge, which can be positioned over a particular fuel assembly.
  • a hoist On the platform is mounted a hoist connected to a grapple, by means of which a fuel assembly underwater can be gripped and lifted out of the core and moved to a different core position or to an adjacent fuel storage pool.
  • Safety standards demand that the hoist be provided with adequate braking mechanisms to prevent dropping of the fuel load during the moving procedure should a malfunction arise in the hoist mechanism.
  • FIGS. 1-3 One form of hoisting apparatus capable of satisfying the stringent safety standards established in the nuclear reactor field is illustrated in FIGS. 1-3. It comprises what is essentially a conventional electrically operated winch hoist which has been modified to incorporate a novel braking system, additional hose or cable supply drums, and provision for translating the system to align the unwinding cables with the load.
  • the conventional part of the hoist which is commercially available, comprises a main electrical motor 10 whose motor shaft (not shown) extends through a main or load cable drum 20 to a conventional reducing gear box 12 employing for example normal high-efficiency spur gearing.
  • the output of the reducing gears is directly coupled to a driving gear (not shown) on the right end of the main drum 20.
  • a normal braking system 13 which can be of the disc brake type, coupled to the main motor shaft or drum and adapted to brake the drum or load whenever electrical power is interrupted, but this primary brake construction 13 as such is well known and further details of its interior construction are unnecessary and are omitted. Any known braking system capable of supporting the load when the main hoist motor is stopped can be employed.
  • the second braking system in accordance with the invention is afforded by irreversible gearing, specifically worm gearing, coupled to the left side of the drum.
  • the main cable drum has a spur gear 21 mounted on its left side.
  • a mating gear 22 rigidly mounted on an elongated hollow shaft 23 journalled in main load bearings 24 at opposite shaft ends.
  • the shaft bearings 24 are supported on a platform 25 having end uprights 26 and a supporting base 27.
  • Extending through the hollow shaft is a threaded lead screw 30, whose ends are supported by end uprights 31 connected to a main support base member 32.
  • the lead screw is fixed in position and cannot rotate, but the hollow shaft 23 is free to rotate about the lead screw 30.
  • a lead-screw nut 33 In engagement with the left end of the lead screw is a lead-screw nut 33 which is fixed to the hollow shaft 23.
  • a worm wheel 35 Mounted on the hollow shaft and rotatable therewith is a worm wheel 35.
  • a support 36 for an auxiliary electrical motor 37 whose shaft 28 is connected to a worm 38 in engagement with the worm wheel 35.
  • the worm 38 is journalled in bearings 39 mounted on the platform 36 (FIG. 3).
  • Electrical connections 40 are made to the main load motor 10, and also 41 to the auxiliary motor 37. Both connections 40, 41 then go to a suitable controller of a conventional type for controlling the speed and direction of rotation of the motors in order to wind or unwind a main load cable 45 in order to raise or lower, respectively, the load.
  • both motors are electrically connected together so that when power is supplied to cause the main motor 10 to rotate in a particular direction, simultaneously power is also supplied to the auxiliary motor 37 to cause its rotation in a particular direction, specifically, the same direction that the worm 38 would rotate when the main motor 10 is driven, if the auxiliary motor 37 were not present and high friction did not prevent reverse driving of the worm 38.
  • the operation is based on the following. There is a direct coupling of the main drum 20 to the worm 38 via the spur gearing 21, 22 and worm wheel 35.
  • the friction losses that develop in trying to rotate the worm 38 by driving its mating worm wheel are so high that the worm 38 cannot be reversely driven for all practical purposes, and hence the main drum 20 will be locked in position by the worm gear 38 and will not be moved (in the absence of the primary brake 13).
  • the main motor 10 cannot move a load on the cable 45.
  • auxiliary motor 37 does is to drive the worm 38 in the same direction it would tend to rotate if the main motor 10 could drive it, and thus in effect maintains the secondary worm gear brake unlocked and allows the main drum 20 to be rotated by the main motor 10.
  • the auxiliary motor 37 which is of the known torque type, is chosen to have insufficient power to drive the load through the worm gearing 38, 35. Hence, if the main motor 10 fails, the load will lock since it cannot be driven by the auxiliary motor 37 and it cannot reverse drive the worm 38.
  • the main motor 10 must be applying power to the main drum 20, and as a second requirement the auxiliary motor 37 must be applying power to the worm 38 tending to cause it to rotate, to allow the main drum in turn to rotate.
  • the primary braking system 13 functions to support the load whenever the main hoist motor power is interrupted,
  • the load cable 45 is wound around the main drum 20 in suitable grooves therein and then depends from the drum 20 passing behind the platform 27 and extending down through an opening in the base support 32 to terminate in a suitable load support member (not shown).
  • the hoist cable For moving fuel, typically the hoist cable extends within and operates a series of telescoping tubes (not shown) known as a grapple, and terminating in a suitable structure for locking to the fuel.
  • a series of telescoping tubes not shown
  • the drum 20 were fixed in lateral position, as the load cable 45 unwound it would laterally shift relative to the location'of the load.
  • the drum 20 translates to the right of FIG. 2 while it rotates so that the unwinding cable maintains a fixed position relative to the hole 50 in the base plate 32 and thus to the load.
  • the platform and other members translates to the left of FIG. 2.
  • the platform 25 is supported on the main support 32 by means of linear bearings 51 on a pair of spaced shafts 52 that allow free sliding movement of the bearings and platform along the shafts in the manner described above.
  • first auxiliary drum 55 mounted on the hollow shaft 23 is a first auxiliary drum 55 by way of bearings 56 which permit free rotation thereof about the hollow shaft.
  • the auxiliary drum 55 is driven by a flexible coupling 57 via the hollow shaft.
  • a suitable member 58 is secured to the hollow shaft 23, and another member 59 is secured to the inside of the drum, and these two members are coupled by way of a tight spring 60 (See also FIG. 4).
  • the spring tension is such as to cause the first auxiliary drum 55 to rotate in a direction which will rewind its cable 61, which may be an electrical cable or an air hose.
  • This auxiliary drum cable is often required to supply air pressure or electrical power to the fuel grapple to operate same.
  • the arrangement is such that the auxiliary drum 55 follows the main drum and winds or unwinds its auxiliary cable 61 at the 4 same rate as that of the load cable 45, thus enabling the auxiliary cable to be connected to the load and to follow along with it.
  • the flexible coupling 57 providing a winding tension on the auxiliary drum ensures that the auxiliary cable remains taut so as not to interfere with handling of the load.
  • FIG. 3 also shows if needed the provision of a second auxiliary drum 65 mounted on a shaft 80 supported on the platform and activated by spur gearing 68 coupled to the spur gear 22 on the hollow shaft 23.
  • This second drum 65 will thus rotate and translate in synchronism with the first auxiliary drum 55 and can be used to supply a second cable 82 or hose to the load.
  • a suitable idler sheave 70 is mounted as schematically indicated at 71 on the bottom base support 32 to bring the cable 61 that comes off of the right hand side of the first auxiliary drum 52 (FIG. 3) over to the load cable 45.
  • the second auxiliary drum 65 can be driven by suitable gearing from the first auxiliary drum 52, thereby incorporating the cable taut feature described in connection with FIG. 4.
  • the worm gear 38 is provided with a square shank end 72 which projects beyond its bearing 39. In an emergency, this shank 72 can be utilized for hand driving of the worm 38 in order to raise or lower the load in case of failure of the electrical power supply or to release the worm.
  • a hoist with safety brake is obtained featuring two separate and independent braking systems, the static worm gearing and the usual hoist load brake, affording excellent protection against a wider range of possible hoist malfunctions, all the while maintaining small size and low weight, and high efficiency thus enabling reduced driving power.
  • Hoisting apparatus especially adapted for moving a load such as nuclear fuel, comprising a main drum, a load cable wound on the drum for coupling to the load, main drive means directly coupled to the main drum for driving same, substantially irreversible gearing separate from the main drive means, means for continuously engaging said irreversible gearing to the main drum, auxiliary drive means connected to the irreversible gearing for driving same in the same direction as that imparted to the irreversible gearing by the main drum when the latter is driven by the main drive means, and means for activating the auxiliary drive means whenever the main drive means is activated.
  • main drive means is an electrical motor capable of driving the main drum with the load cable coupled to the load
  • auxiliary drive means is a separate electrical motor incapable alone or driving the main drum with a loaded load cable.
  • the irreversible gearing comprises a worm wheel directly coupled to the main drum and a worm mating with the worm wheel and directly coupled to the auxiliary motor.
  • Hoisting apparatus as claimed in claim 3 and further comprising a support, a platform on said support and translatable relative thereto, said motors, drum and gearing being mounted on said platform, and means in response to drum rotation to translate said platform.
  • Hoisting apparatus as set forth in claim 4 and further comprising a lead screw, threaded means in engagement with said lead screw, means coupling said platform to said threaded means, and means coupling said threaded means to said main drum for causing rotation of the threaded means in response to drum rotation.
  • Hoisting apparatus as claimed in claim 1 and further comprising at least one auxiliary drum, at least one hose or auxiliary cable wound on the auxiliary drum, and means for rotating the auxiliary drum in response to rotation of the main drum.
  • Hoisting apparatus as claimed in claim 6 wherein the rotating means for the auxiliary drum includes a flexible coupling in order to maintain taut the hose or auxiliary cable relative to the load.
  • the irreversible gearing is a secondary brake, and further comprising a primary brake coupled to the main drum and adapted to support the load whenever power to the main drive means is interrupted.
  • Hoisting apparatus especially adapted for moving a load such as nuclear fuel, comprising a main drum, a load cable wound on the drum for coupling to the load, high efficiency main drive means directly coupled to the main drum for driving same, substantially irreversible gearing separate from the main drive means and comprising a worm wheel directly coupled to the main drum and a worm mating with the worm wheel, separate auxiliary drive means directly coupled to the worm for driving the irreversible gearing in the same direction as that imparted to the irreversible gearing by the main drum when the latter is driven by the main drive means,
  • Hoisting apparatus especially adapted for moving a load such as nuclear fuel, comprising a main rotatable drum, a load cable wound on the drum for coupling to the load, main drive means directly coupled to the main drum for driving same, substantially irreversible gearing directly and continuously coupled to the main drum and tending to lock the drum and prevent drum rotation both during winding and unwinding of the load cable; and means for maintaining the irreversible gearing in an unlocked condition in the absence of an apparatus malfunction, said last-named means including auxiliary drive means connected to the irreversible gearing further comprising a separate braking system coupled to the main drum and adapted to support the load whenever power to the main drive means is inter-

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)
  • Types And Forms Of Lifts (AREA)
  • Braking Arrangements (AREA)
  • Transmission Devices (AREA)
  • Control And Safety Of Cranes (AREA)
US00265571A 1972-06-23 1972-06-23 Motor-driven hoist with protective braking system Expired - Lifetime US3836121A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US00265571A US3836121A (en) 1972-06-23 1972-06-23 Motor-driven hoist with protective braking system
DE2331227A DE2331227A1 (de) 1972-06-23 1973-06-19 Aufzug mit sicherheitsbremsvorrichtung
FR7322209A FR2189302B3 (enrdf_load_stackoverflow) 1972-06-23 1973-06-19
IT68836/73A IT986495B (it) 1972-06-23 1973-06-20 Paranco azionato a motore con si stema di frenatura di sicurezza
JP48068842A JPS4956349A (enrdf_load_stackoverflow) 1972-06-23 1973-06-20

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Application Number Priority Date Filing Date Title
US00265571A US3836121A (en) 1972-06-23 1972-06-23 Motor-driven hoist with protective braking system

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US3836121A true US3836121A (en) 1974-09-17

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US00265571A Expired - Lifetime US3836121A (en) 1972-06-23 1972-06-23 Motor-driven hoist with protective braking system

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US (1) US3836121A (enrdf_load_stackoverflow)
JP (1) JPS4956349A (enrdf_load_stackoverflow)
DE (1) DE2331227A1 (enrdf_load_stackoverflow)
FR (1) FR2189302B3 (enrdf_load_stackoverflow)
IT (1) IT986495B (enrdf_load_stackoverflow)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983002236A1 (en) * 1981-12-30 1983-07-07 Smith, Robert, S. Isometric and isotonic excerciser with variable resistance
US4479647A (en) * 1981-12-30 1984-10-30 Smith Robert S Resistance exerciser
US4625946A (en) * 1984-03-19 1986-12-02 Ederer Incorporated Hoist having worm safety device
US4973893A (en) * 1989-12-12 1990-11-27 Allied-Signal Inc. Piston and drum drive system
US20030107030A1 (en) * 2000-05-18 2003-06-12 Chiara Sozzi Driving device for the traction of cables or chains
EA015742B1 (ru) * 2010-12-13 2011-10-31 Зао "Диаконт" Подъёмный механизм для подъёма электрического устройства с подмоткой кабеля такого устройства
WO2012131595A1 (en) * 2011-04-01 2012-10-04 Siguren Ingenierie Assembly comprising a security apparatus equipping a lifting device, in particular a winch, and system for actuating said apparatus
US20140284108A1 (en) * 2013-03-20 2014-09-25 Axon Ep, Inc. Drawworks system
EP2977344A1 (de) * 2014-07-22 2016-01-27 MOOG GmbH Hebevorrichtung für Lasten
US9790063B1 (en) * 2014-01-15 2017-10-17 Ramsey Winch Company Electronically controlled clutch for a winch
CN109665421A (zh) * 2017-10-17 2019-04-23 陕西小溪机电科技有限公司 带有安全回路检测系统的电梯曳引机构
US11254549B2 (en) 2019-06-04 2022-02-22 Goodrich Corporation Hoist translating drum with bar spline bearing
US11261066B2 (en) * 2018-03-08 2022-03-01 Cavo Otomotiv Ticaret Ve Sanayi Anonim Sirketi Spare tire winch with autogenous tire lowering mechanism and lock
US11272684B2 (en) * 2014-01-21 2022-03-15 Gea Farm Technologies Canada, Inc. Cable drive unit

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2824057A1 (fr) * 2001-04-25 2002-10-31 Yavor Pachov Suiveur d'entrainement de securite irreversible
FR2946968B1 (fr) * 2009-06-23 2011-07-08 Abcd Systeme de securite pour piece tournante et treuil de levage equipe d'un tel systeme
ES2568732T3 (es) * 2012-03-28 2016-05-04 C & Cm Consulting Limited Conjunto que comprende un aparato de seguridad para equipar un dispositivo de elevación, en particular un cabestrante, y un sistema para accionar dicho aparato
CN109368437B (zh) * 2018-12-15 2023-07-14 康达电梯有限公司 电梯的防坠系统

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US1781134A (en) * 1928-02-07 1930-11-11 Edward J Shoemaker Submarine and auxiliary boat therefor
US1885458A (en) * 1930-03-15 1932-11-01 Joseph Maniscalco Speed control for elevators
US2884800A (en) * 1957-05-01 1959-05-05 Duff Norton Co Worm drive mechanism
US3477695A (en) * 1967-02-20 1969-11-11 Potain Sa Soc Lifting winches
US3541888A (en) * 1969-04-14 1970-11-24 Warn Belleview Inc Mechanical power transmitting mechanism

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Publication number Priority date Publication date Assignee Title
US1781134A (en) * 1928-02-07 1930-11-11 Edward J Shoemaker Submarine and auxiliary boat therefor
US1885458A (en) * 1930-03-15 1932-11-01 Joseph Maniscalco Speed control for elevators
US2884800A (en) * 1957-05-01 1959-05-05 Duff Norton Co Worm drive mechanism
US3477695A (en) * 1967-02-20 1969-11-11 Potain Sa Soc Lifting winches
US3541888A (en) * 1969-04-14 1970-11-24 Warn Belleview Inc Mechanical power transmitting mechanism

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983002236A1 (en) * 1981-12-30 1983-07-07 Smith, Robert, S. Isometric and isotonic excerciser with variable resistance
US4479647A (en) * 1981-12-30 1984-10-30 Smith Robert S Resistance exerciser
US4625946A (en) * 1984-03-19 1986-12-02 Ederer Incorporated Hoist having worm safety device
US4973893A (en) * 1989-12-12 1990-11-27 Allied-Signal Inc. Piston and drum drive system
US20030107030A1 (en) * 2000-05-18 2003-06-12 Chiara Sozzi Driving device for the traction of cables or chains
US6874763B2 (en) * 2000-05-18 2005-04-05 Chiara Sozzi Driving device for the traction of cables or chains
EA015742B1 (ru) * 2010-12-13 2011-10-31 Зао "Диаконт" Подъёмный механизм для подъёма электрического устройства с подмоткой кабеля такого устройства
WO2012131595A1 (en) * 2011-04-01 2012-10-04 Siguren Ingenierie Assembly comprising a security apparatus equipping a lifting device, in particular a winch, and system for actuating said apparatus
FR2973361A1 (fr) * 2011-04-01 2012-10-05 Siguren Ingenierie Ensemble comprenant un appareil de securite equipant un dispositif de levage, notamment un treuil, et un systeme d'actionnement de cet appareil
CN104245560A (zh) * 2011-04-01 2014-12-24 西格恩工程简易股份有限公司 一种包含配备在升降设备,特别是绞车上的安全装置及执行所述安全装置的操作系统的设备
CN104245560B (zh) * 2011-04-01 2016-11-16 西格恩工程简易股份有限公司 一种包含配备在升降设备，特别是绞车上的安全装置及执行所述安全装置的操作系统的设备
US9272885B2 (en) 2011-04-01 2016-03-01 Siguren Ingenierie Assembly comprising a security apparatus equipping a lifting device, in particular a winch, and a system for actuating said apparatus
US20140284108A1 (en) * 2013-03-20 2014-09-25 Axon Ep, Inc. Drawworks system
US9790063B1 (en) * 2014-01-15 2017-10-17 Ramsey Winch Company Electronically controlled clutch for a winch
US10259693B1 (en) 2014-01-15 2019-04-16 Ramsey Winch Company Electronically controlled clutch for a winch
US11272684B2 (en) * 2014-01-21 2022-03-15 Gea Farm Technologies Canada, Inc. Cable drive unit
EP2977344A1 (de) * 2014-07-22 2016-01-27 MOOG GmbH Hebevorrichtung für Lasten
CN109665403A (zh) * 2017-10-17 2019-04-23 陕西小溪机电科技有限公司 一种对重隐藏式双机曳引装置
CN109665418A (zh) * 2017-10-17 2019-04-23 陕西小溪机电科技有限公司 一种电梯曳引机构
CN109665416A (zh) * 2017-10-17 2019-04-23 陕西小溪机电科技有限公司 一种电梯曳引系统中的对重布置结构
CN109665423A (zh) * 2017-10-17 2019-04-23 陕西小溪机电科技有限公司 一种具有救援门机的曳引装置
CN109665420A (zh) * 2017-10-17 2019-04-23 陕西小溪机电科技有限公司 一种具有安全钳的曳引装置
CN109665407A (zh) * 2017-10-17 2019-04-23 陕西小溪机电科技有限公司 一种基于安全回路检测的双机曳引电梯
CN109665394A (zh) * 2017-10-17 2019-04-23 陕西小溪机电科技有限公司 带有安全回路检测的电梯曳引机构
CN109665422A (zh) * 2017-10-17 2019-04-23 陕西小溪机电科技有限公司 配置有安全回路检测系统和手动救援装置的电梯
CN109665395A (zh) * 2017-10-17 2019-04-23 陕西小溪机电科技有限公司 配置有安全回路检测系统的双机曳引电梯
CN109665421A (zh) * 2017-10-17 2019-04-23 陕西小溪机电科技有限公司 带有安全回路检测系统的电梯曳引机构
US11261066B2 (en) * 2018-03-08 2022-03-01 Cavo Otomotiv Ticaret Ve Sanayi Anonim Sirketi Spare tire winch with autogenous tire lowering mechanism and lock
US11254549B2 (en) 2019-06-04 2022-02-22 Goodrich Corporation Hoist translating drum with bar spline bearing

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FR2189302A1 (enrdf_load_stackoverflow) 1974-01-25
FR2189302B3 (enrdf_load_stackoverflow) 1976-06-11
DE2331227A1 (de) 1974-01-10
JPS4956349A (enrdf_load_stackoverflow) 1974-05-31
IT986495B (it) 1975-01-30

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