US3762777A - Device for controlling a winch provided with a safety device - Google Patents

Device for controlling a winch provided with a safety device Download PDF

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Publication number
US3762777A
US3762777A US00232688A US3762777DA US3762777A US 3762777 A US3762777 A US 3762777A US 00232688 A US00232688 A US 00232688A US 3762777D A US3762777D A US 3762777DA US 3762777 A US3762777 A US 3762777A
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Prior art keywords
conduit
distributor
winch
pressure
source
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US00232688A
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English (en)
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R Jacob
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Poclain SA
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Poclain SA
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    • 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
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/4157—Control of braking, e.g. preventing pump over-speeding when motor acts as a pump
    • 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
    • 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
    • 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
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/01—Locking-valves or other detent i.e. load-holding devices
    • 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
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • 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
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/4035—Control of circuit flow
    • 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
    • B66D2700/03—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
    • 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
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30—Constructional features of the final output mechanisms
    • F16H63/3023—Constructional features of the final output mechanisms the final output mechanisms comprising elements moved by fluid pressure
    • F16H63/3026—Constructional features of the final output mechanisms the final output mechanisms comprising elements moved by fluid pressure comprising friction clutches or brakes
    • F16H2063/3033—Constructional features of the final output mechanisms the final output mechanisms comprising elements moved by fluid pressure comprising friction clutches or brakes the brake is actuated by springs and released by a fluid pressure

Definitions

  • Jacob 1 Oct. 2, 1973 1 DEVICE FOR CONTROLLING A WINCH PROVIDED WITH A SAFETY DEVICE [75] lnventor: Rene F. Jacob, Lagny Le Sec (oise),
  • ABSTRACT Greenside [57] ABSTRACT
  • This invention relates to the control of a winch connected to a hydraulic motor which pomprises two con; duits connected, the first to a source of pressurized fluid or to a discharge tank, the second to the tank or to the source, this control comprising a brake provided with a control member selectively connected by a third conduit to the source and to the tank.
  • a calibrated valve is disposed on the conduit, downstream of the connection of the conduit to the delivery of the source.
  • This control is suitable for being adapted to the circuit for adjusting the position of the hook of a crane.
  • the present invention relates to a device for, controlling a winch provided with a safety brake.
  • a hydraulic motor is coupled to the winch and has one of its chambers selectively placed in communication either with a source of pressurised fluid, or with a discharge tank.
  • the release of the safety brake is generally controlled by a jack, the feed of winch is connected to the main hydraulic circuit controlling the motor of the winch.
  • the invention intends to remedy this state of affairs, and to this end proposes a new winch controlling device.
  • the hydraulic drive motor coupled with thewinch comprises two conduits connected respectively and selectively by means of an at least two-way distributor, the first to a source of pressurized fluid in the position of the distributor corresponding to. the turning of the winch, and to a discharge tank when the distributor is in its position opposite that corresponding to the turning, the second to the discharge tank and to the source of pressurized fluid, the control device, comprises a safety brake provided with a control member selectively connected, by a third conduit, to said source of pressurized fluid and to said discharge tank.
  • a calibrated valve is disposed on said first conduit
  • the control device comprises in addition a speed limiter disposed on the firstconduit, and this speed limiter has a section of passage which is adjustable, when the distributor is in the position opposite that corresponding to the turning, asa function of the value of the pressure of the fluid contained in the second conduit, the calibrated valve is preferably constituted by said speed limiter.
  • FIG. 1 is a schematic section of a first embodiment of adevice according to the invention
  • FIGS. 2, 3 and 4 are schematic sections of a secon variant of a device according to the invention, but in three distinct positions of the control distributor of the winch.
  • the device shown in FIG. 1 comprises a winch which, in the present case, is referenced by its hydraulic drive motor 1.
  • a safety brake is constituted by its brake lining 2, disposed opposite the winch.
  • the lining 2 is articulated about the axis 3 and is normally maintained in abutment on the winch with the aid of an elastic holding member 4.
  • a jack 5 is, furthermore, coupled between the structure 6, on which is mounted the winch and the lining 2. When the lower chamber 5a of the jack 5 is fed with pressurized fluid, said jack 5 develops a force opposite to that of the elastic member 4.
  • the chamber 5b of the jack 5, opposite chamber 5a is per manently connected to a discharge tank 7 by a conduit 8.
  • the motor 1 comprises two conduits 9 and 10, of which conduit 9 may constitute either the fluid admission or delivery conduit depending upon the direction of rotation of the winch.
  • conduit 9 may constitute either the fluid admission or delivery conduit depending upon the direction of rotation of the winch.
  • Conduits 9 and 10 are selectively connected to delivery conduit 11 of a pump 12, whose suction conduit 13 is connected to the discharge tank 7, and to said tank 7 by means .of a conduit 14, respectively, and vice versa, by means of a three-way distributor 15.
  • a valve 16 which comprises a calibrated spring 17, is in series connection with the conduit 9.
  • the conduits 9 and 10 on the one hand and 11 and 14 on the other hand, are connected to the distributor 15 which ensures the following communicating connections: in its first position, the conduit 11 with conduit 14, by isolating conduits 9 and 10; in its second position, conduit 9 with conduit 11 and conduit 10 with conduit 14; finally, in its third position, the conduit 10 with-conduit 11 and conduit 9 with conduit 14.
  • a conduit 18 furthermore connects chamber 5a of the jack 5 to the delivery conduit 11 of the pump 12, while-a conduit 19, is connected between the conduit 18and'to the valve 16.
  • Said valve 16 comprises a slide 20 -which is subjected to the oppositely directed forces imparted by the calibrated valve spring l7 and the pressure of the fluid contained in conduit 19.
  • the slide 20 of the valve 16 comprisesin addition a shoulder 21 capable of being displaced based the edge 22 of a groove 23 in the body 24 of the valve 16, while the part of the conduit 9, connected to the motor 1,
  • the slide 20 by virtue ofithe portion of shoulder 21 ensures either the isolation of two grooves 23 and 25 or communication therebetween by means of the section of passage constituted by the space between the edge 22 of the groove 23 and said shoulder 21, said section of passage having a value that varies from a'zero section to a section without pressure drop, adjusted as a function of the position occupied by the slide 20 which is balanced under the antagonistic actions of the spring 17, and of the pressure of the fluid contained in the conduit 19, said pressure acting on the face 26 of a piston 27 coupled to said slide 20.
  • FIG. 2 An advantageous variant embodiment is shown in FIG. 2, in which the common elements of FIG. 1 are provided with the same reference numerals.
  • this embodiment is the presence of one or more receivers, other than the motor 1 of the winch, which fed by a single pump 12.
  • a jack 28 is connected by conduits 29 and 30 to the feed circuit of the winch.
  • a three-way distributor 31 is interposed in the delivery conduit 11 of the pump 12 between said pump and the distributor 15.
  • a two-way distributor 32 is interposed on the conduit 18.
  • the slide of this distributor 32 is mechanically coupled, in the example shown, to the slide of distributor 15, so that there corresponds to the first position of distributor 15, in which the conduit 11 is placed in communication with the conduit 14, a first position of distributor 32, in which the parts of the conduit 18 located upstream and downstream of said distributor 32 are isolated from one another. Furthermore in the first position of the distributor 32 chamber a of jack 5 is connected to the tank 7 by a conduit 33.
  • FIGS. 3 and 4 which respectively illustrate the slide of thedistributor 15 disposed in its second and third positions
  • the cam has been displaced with said slide of the distributor 15, so that the roller 36 is, in each of these two cases, disposed on one of the apices 34.
  • the slide of the distributor 32 has therefore been urged rearwardly and is disposed in its second position, in which the conduit 33 connection at distributor 32 is broken while the conduit parts 18 are in communication and connect the chamber 50 of the jack 5 to conduit 11.
  • FIGS. 2 to 4 Another feature of the embodiment of FIGS. 2 to 4 will now be distributed.
  • the conduit 19 has been eliminated, and instead a conduit 40, is connected on the one hand and between that portion of conduit 9 disposed between valve 16 and distributor l5, and on the other hand to the face 26 of piston 27.
  • a supplementary groove 41 is provided in the body 24.
  • the conduit 10 is separated into two parts the groove 41 being disposed therebetween.
  • the piston 27 is furthermore distinct from the slide 20, with which piston 42 is integral.
  • the face 43 of the piston 27, which is opposite face 26, is thus opposite the face 44 of piston 42.
  • the face 44 of piston 42 is permanently subjected to the action of the pressure of the fluid contained in groove 41.
  • the chamber 5a is on the on the other hand placed in communication, by conduit 18, with conduit 11.
  • the action of the jack 5 in such circumstances overcomes the action of the elastic member 4, so that the lining 2 is separated from the winch.
  • the spring 17 of the valve 16 acts independently on the slide 20, which it urges to the right as viewed in the drawing thereby isolating the two parts of conduit 9.
  • the distributor 15 may be disposed in one of its three positions.
  • the winch In its first position, shown in this figure, the winch is isolated from the tank 7 and from the pump 12.
  • the pump 12 discharges into conduit 11 which returns to tank 7, through the intermediary of distributor 15 and conduit 14.
  • the pressure in conduit 11 is thus zero (except for pressure drops) and the pressure of the fluid in conduit 18 and in chamber 5a of jack 5 is therefore also zero.
  • the brake lining 2 is accordingly in abutment with the winch under the action of the elastic holding member 4.
  • the pressure in the conduit 19 is also zero so that, under the action of spring 17, the slide 20 is pushed back and isolates the two parts of conduit 9 from one another.
  • the pressure in the groove 23 and the second part of conduit 9 will suffice to cause the winch to turn.
  • the pressure is relatively low in the groove 23 and falls, with respect to its initial value, in the first part of the conduit 9 and conduits 11, 18 and 19.
  • the force on the face 26 of the piston 27 diminishes, and the spring 17 returns the slide 20 towards its initial position (towards the right).
  • the passage between the edge 22 and the shoulder 21 is thereby narrowed, but not closed, and constitutes thereby a restriction with pressure drop: the value of the pressure in the groove 25 being higher than the value of the pressure in the groove 23.
  • the pressure in the conduits l1, l8 and 19 is therefore stabilized to a value determined as a function of calibration of the spring 17.
  • the spring 17 has been chosen so that the pressure in the groove 25 is equal to 50 bars.
  • the pressure of a fluid in for example conduit 11 could only be 5 bars. Accordingly, to overcome the effect of the elastic member 4, a large section for jack 5 had to be provided which in consequence required within its chamber 50 a large quantity of fluid. When the winch was immobilized and the safety brake made operative, the fluid previously introduced into the chamber 5a had to be evacuated, this requiring, this provision of large section conduits for conduits 18, 11 and 14 in order to avoid counterpressures. With the device of FIG. 1, the pressure in the conduit 11 is never lower than 50 bars.
  • either the pressure in the groove 23 is greater than 50 bars and that in the groove 25 is generally so, or the pressure in groove 23 is lower than 50 bars, and that in groove 25 is at least equal to 50 bars.
  • the distributor 15 When, finally, the distributor 15 is in its third position, the fluid is admitted into the motor 1 through conduit 10, the flow path being completed by the part of the conduit 9 connected to groove 23. If the pressure in the conduits 11 and 10 is high (for example higher than 50 bars), the action of the pressure on the face 26 overcomes the bias of the spring 17. The passage thereby formed between the edge 22 and the shoulder 21 is without pressure drop and the delivery of the fluid of the motor 1 to the tank 7 is also effected without pressure drop. If, on the other hand the winch tends to race and drive the motor 1, the feed output of the said motor drops and the pressure in conduit 10 will be lowered, the same applying to as in conduits ll, 18 and 19.
  • the device of FIG. 1 is of particular advantage when the pump 12 feeds only the winch.
  • another receiver such the jack 28 of FIGS. 2 to 4 has also to be fed by pump 12, a momentary drop in pressure in the conduit 18 and consequently in conduit 19 may take place.
  • the pressure supplied for conduit 40 (see FIG. 2) is tapped from conduit 9 as connected between distributor 15 and valve 16 at a location close to the groove 25 so as not to be subject to the pressure fluctuations arising from feed of the jack 28.
  • FIG. 2 shows the distributor 15 in its first position, the jack 28 moreover not being supplied with fluid.
  • the pump 12 delivers fluid 15 to tank 7 through conduit 1 l, the distributors 31 and 15 and conduit 14.
  • the winch is not supplied with fluid, since the distributor 15 isolates the part of the conduit 9 connected to groove 25 and conduit 10.
  • the winch is braked, the lining 2 being in firm abutment on said winch, since the chamber 5a is in communication with the tank 7, by conduit 18, distributor 32 and conduit 33.
  • the winch turns (crane hook rising for example). If the winch turns under load, the pressure is high in groove 23 and consequently in the whole of conduit 9 and in conduit 40. The opening of passage 45 is thus large and brings about practically no pressure drop. Of course, the pressure in the conduits l1 and 18 is then also high. Hence, by the action of the jack 5, the lining 2 will be separated from the winch and the brake will released. If, on the other hand, the winch turns without load (hook alone), the pressure will be low in groove 23, but due to the pressure drop caused by the opening of the then restricted passage 45, the pressure in conduit 1 1 remains higher than a given value, for example 50 bars as previously mentioned. The jack 5 therefore continues to disables the brake of the winch.
  • the pressure in the groove 25 is practically zero (connected to the discharge tank 7) and can no longer actuate piston 27, by conduit 40.
  • the feed pressure of the fluid contained in conduit 10 is high, when the motor 1 effectively drives the winch and when said latter does not race.
  • the pressure of the fluid contained in the groove 41 therefore overcomes the bias effect of the spring 17 and maintains at a high value the pressue in the section defined by the passage 46 which is then not subjected to pressure drops.
  • the fluid delivered into groove 23 by motor 1 accordingly flows without difficulty towards the tank 7.
  • a winch tend to race and drive the motor 1, the pressure in the conduit 10 drop and the pressure in the section 46 will also drop.
  • the restriction of the passage opening limits the output of the motor 1 and thus also the speed of rotation of said motor, and acts thereby as conventional speed limiter, controlled by the pressure of the fluid in the conduit 10 for feeding the motor.
  • the same speed limiting is applicable to the device shown in FIG. 1, albeit with a hydraulic control of the position of the slide 20, which is more direct and less sensitive to the possible variations in pressure in conduits 1 l and 18.
  • a single element has been described for use as a conventional speed limiter and for maintaining the pressure in section 25 at a given value (50 bars in the example chosen), it is obviously possible to provide these functions by two separate elements rather than the single element described.
  • Device for controlling a winch coupled with a hydraulic drive motor which comprises at least a two way distributor, a discharge tank, a source of supply of pressurized fluid operatively connected between said distributor and said discharge tank, two conduits connected to said distributor for selective connection thereby between said discharge tank and said source of pressurized fluid, a third conduit operatively connected to said source of pressurized fluid and said distributor, a safety brake having a control member selectively connected by said third conduit to said source of pesssurized fluid and to said discharge tank, and a valve interposed in said conduit downstream of the connection of said third conduit with said source of pressurized fluid.
  • Control device wherein with said distributor in one position thereof, during turning of the winch, the opening of said valve is controlled as a function of the pressure of the fluid contained in that part of the first conduit located downstream of said source of fluid.
  • Control device according to claim 1, wherein said valve comprises a limiter having a passage section which is adjustable as a function of movement ofa slide forming part of the valve.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Braking Arrangements (AREA)
US00232688A 1971-03-17 1972-03-08 Device for controlling a winch provided with a safety device Expired - Lifetime US3762777A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7109417A FR2129871B1 (ja) 1971-03-17 1971-03-17

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US3762777A true US3762777A (en) 1973-10-02

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US (1) US3762777A (ja)
BE (1) BE780221A (ja)
DE (1) DE2212414A1 (ja)
ES (1) ES400848A1 (ja)
FR (1) FR2129871B1 (ja)
GB (1) GB1350867A (ja)
IT (1) IT953000B (ja)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3908843A (en) * 1974-02-21 1975-09-30 Massey Ferguson Inc Brake system
US3976333A (en) * 1974-05-14 1976-08-24 Societe Anonyme: Poclain Fluid motor braking system
US4037878A (en) * 1976-05-28 1977-07-26 J. I. Case Company Vehicle with dual braking systems
EP0004838A2 (en) * 1978-04-11 1979-10-17 Atlas Copco Aktiebolag A drill boom arrangement
DE3010913A1 (de) * 1980-03-21 1981-10-01 Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen Hydrostatisches antriebssystem
WO1984000334A1 (en) * 1982-07-12 1984-02-02 Caterpillar Tractor Co Brake control system with metering pump relief
US4458791A (en) * 1982-07-12 1984-07-10 Caterpillar Tractor Co. Brake control system with metering pump relief
US20090250543A1 (en) * 2008-04-03 2009-10-08 Mark Bond Calibrated mechanical winch and method of manufacture
CN102807172A (zh) * 2012-07-19 2012-12-05 武汉船用机械有限责任公司 一种液压绞车的制动装置及***
US20140231731A1 (en) * 2012-07-18 2014-08-21 Panasonic Corporation Gas spring device, and balancer device and actuator which use gas spring device
US9452916B2 (en) 2011-04-20 2016-09-27 Zantho Tools Llc Electrically non-conductive calibrated mechanical winch and method of manufacture
CN107288944A (zh) * 2017-06-17 2017-10-24 无锡德林防务装备股份有限公司 导缆装置浮动支撑用液压***
US10017359B2 (en) * 2014-01-08 2018-07-10 Modern Concepts Outdoors Llc Rack and roller pinion lift system
CN109019379A (zh) * 2017-06-09 2018-12-18 普瑞诺斯股份公司 履带式车辆的绞车组件及其控制方法和履带式车辆
CN114857113A (zh) * 2022-04-18 2022-08-05 中国矿业大学 一种用于高水基马达配流的插装式常开型梭阀及应用

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GB1486978A (en) * 1975-02-28 1977-09-28 Coal Ind Mineral-mining machine
FR2485104B1 (fr) * 1980-03-31 1986-05-23 Meca Ind Ind Agricoles Atel Perfectionnements apportes aux dispositifs hydrauliques de securite pour moteurs hydrauliques
DE3608536C1 (de) * 1986-03-14 1987-09-24 Boecker Albert Gmbh & Co Kg Steuervorrichtung fuer die Betaetigung eines hydraulischen Seilwindenantriebes fuer einen Schraegaufzug
JPH065275Y2 (ja) * 1987-09-30 1994-02-09 アイシン精機株式会社 車両用制動液圧制御装置
GB8728667D0 (en) * 1987-12-08 1988-01-13 Mansign Eng Ltd Hydraulically powered hoist
DE9005983U1 (de) * 1990-05-26 1991-09-19 Robert Bosch Gmbh, 7000 Stuttgart Steuereinrichtung für einen Arbeitszylinder
CN112340630B (zh) * 2020-11-18 2021-12-17 中船华南船舶机械有限公司 一种应急液压***
CN113998607B (zh) * 2021-11-09 2024-07-02 中船华南船舶机械有限公司 一种绞车控制的液压***

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US3253683A (en) * 1963-11-07 1966-05-31 Applied Power Ind Inc Safety circuit
FR1397669A (fr) * 1964-05-26 1965-04-30 Baldwin Lima Hamilton Corp Mécanisme de commande pour treuil hydraulique
FR1502773A (fr) * 1966-08-29 1967-11-24 Retel S A Soc Transmission hydraulique pour tracteur

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3908843A (en) * 1974-02-21 1975-09-30 Massey Ferguson Inc Brake system
US3976333A (en) * 1974-05-14 1976-08-24 Societe Anonyme: Poclain Fluid motor braking system
US4037878A (en) * 1976-05-28 1977-07-26 J. I. Case Company Vehicle with dual braking systems
EP0004838A2 (en) * 1978-04-11 1979-10-17 Atlas Copco Aktiebolag A drill boom arrangement
EP0004838A3 (en) * 1978-04-11 1979-10-31 Atlas Copco Aktiebolag A drill boom arrangement
DE3010913A1 (de) * 1980-03-21 1981-10-01 Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen Hydrostatisches antriebssystem
WO1984000334A1 (en) * 1982-07-12 1984-02-02 Caterpillar Tractor Co Brake control system with metering pump relief
US4458791A (en) * 1982-07-12 1984-07-10 Caterpillar Tractor Co. Brake control system with metering pump relief
US20090250543A1 (en) * 2008-04-03 2009-10-08 Mark Bond Calibrated mechanical winch and method of manufacture
US7762531B2 (en) 2008-04-03 2010-07-27 Mark Bond Calibrated mechanical winch and method of manufacture
US9452916B2 (en) 2011-04-20 2016-09-27 Zantho Tools Llc Electrically non-conductive calibrated mechanical winch and method of manufacture
US20140231731A1 (en) * 2012-07-18 2014-08-21 Panasonic Corporation Gas spring device, and balancer device and actuator which use gas spring device
US9732822B2 (en) * 2012-07-18 2017-08-15 Panasonic Intellectual Property Management Co., Ltd. Gas spring device, and balancer device and actuator which use gas spring device
CN102807172A (zh) * 2012-07-19 2012-12-05 武汉船用机械有限责任公司 一种液压绞车的制动装置及***
US10017359B2 (en) * 2014-01-08 2018-07-10 Modern Concepts Outdoors Llc Rack and roller pinion lift system
CN109019379A (zh) * 2017-06-09 2018-12-18 普瑞诺斯股份公司 履带式车辆的绞车组件及其控制方法和履带式车辆
US11753283B2 (en) 2017-06-09 2023-09-12 Prinoth S.P.A. Winch assembly for assisting the movement of a tracked vehicle and control method thereof
CN107288944A (zh) * 2017-06-17 2017-10-24 无锡德林防务装备股份有限公司 导缆装置浮动支撑用液压***
CN114857113A (zh) * 2022-04-18 2022-08-05 中国矿业大学 一种用于高水基马达配流的插装式常开型梭阀及应用

Also Published As

Publication number Publication date
GB1350867A (en) 1974-04-24
DE2212414A1 (de) 1972-10-19
FR2129871B1 (ja) 1975-02-21
FR2129871A1 (ja) 1972-11-03
BE780221A (fr) 1972-07-03
IT953000B (it) 1973-07-30
ES400848A1 (es) 1975-01-16

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