EP3067308A1 - Hydraulisches system mit zusätzlichem schutz des betriebs der kupplung und trommelbremsenhydraulikkreislauf in einer forstseilwinde - Google Patents

Hydraulisches system mit zusätzlichem schutz des betriebs der kupplung und trommelbremsenhydraulikkreislauf in einer forstseilwinde Download PDF

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Publication number
EP3067308A1
EP3067308A1 EP16158966.8A EP16158966A EP3067308A1 EP 3067308 A1 EP3067308 A1 EP 3067308A1 EP 16158966 A EP16158966 A EP 16158966A EP 3067308 A1 EP3067308 A1 EP 3067308A1
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EP
European Patent Office
Prior art keywords
valve
hydraulic
oil
throttle
hydromotor
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Application number
EP16158966.8A
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English (en)
French (fr)
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EP3067308B1 (de
Inventor
Franc Pisek
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Pisek Vitli Krpan doo
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Pisek Vitli Krpan doo
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Priority to SI201631097T priority Critical patent/SI3067308T1/sl
Publication of EP3067308A1 publication Critical patent/EP3067308A1/de
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    • 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
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/02—Driving gear
    • B66D1/14—Power transmissions between power sources and drums or barrels
    • B66D1/16—Power transmissions between power sources and drums or barrels the drums or barrels being freely rotatable, e.g. having a clutch activated independently of a brake
    • 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
    • B66D1/28—Other constructional details
    • B66D1/40—Control devices
    • B66D1/42—Control devices non-automatic
    • B66D1/44—Control devices non-automatic pneumatic of hydraulic
    • 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
    • B66D1/54—Safety gear
    • B66D1/58—Safety gear responsive to excess of load
    • 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
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/26—Supply reservoir or sump assemblies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20538—Type of pump constant capacity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20546—Type of pump variable capacity
    • F15B2211/20553—Type of pump variable capacity with pilot circuit, e.g. for controlling a swash plate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/21—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge
    • F15B2211/212—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge the pressure sources being accumulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/3056—Assemblies of multiple valves
    • F15B2211/30585—Assemblies of multiple valves having a single valve for multiple output members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40515—Flow control characterised by the type of flow control means or valve with variable throttles or orifices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40553—Flow control characterised by the type of flow control means or valve with pressure compensating valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7058—Rotary output members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
    • F15B2211/7135—Combinations of output members of different types, e.g. single-acting cylinders with rotary motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/715—Output members, e.g. hydraulic motors or cylinders or control therefor having braking means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/75—Control of speed of the output member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/80—Other types of control related to particular problems or conditions
    • F15B2211/86—Control during or prevention of abnormal conditions
    • F15B2211/863—Control during or prevention of abnormal conditions the abnormal condition being a hydraulic or pneumatic failure
    • F15B2211/8636—Circuit failure, e.g. valve or hose failure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/80—Other types of control related to particular problems or conditions
    • F15B2211/875—Control measures for coping with failures
    • F15B2211/8757—Control measures for coping with failures using redundant components or assemblies

Definitions

  • the invention belongs to the field of mechanical engineering, more precisely to the field of hydraulic systems with a hydraulic accumulator as an additional source of hydraulic compressive energy in particularly suitable for machines with unequal consumption.
  • the invention also belongs to the field of forestry winches with hydraulically controlled brake and clutch of a winding drum in a forestry winch.
  • the technical problem which is solved by the present invention, is a constructional solution of a hydraulic system for controlling the winding drum of a winch, which will enable reliable control of the clutch and the brake even in the most critical moments of winch operation.
  • a situation can occur, in which the tractor is lifted from the ground due to an oversized load if the basic valve is stuck and the user stops the winding function. Because in such situations the winding function would not be terminated, the tractor could overturn as the winch would still pull.
  • the construction must enable additional control option in the process of winch steering.
  • Slovene patent no. 22392 discloses a solution of a hydraulic aggregate for supply and control of hydraulic consumers, in particular a brake and a clutch in a forestry winch.
  • the hydraulic aggregate for supply and control of smaller hydraulic consumers, particularly cylinders for the control of a brake and a clutch in a forestry winch comprises at least a hydraulic medium tank, a pump to assure a required pressure of the hydraulic medium and a control assembly consisting of at least one control valve and at least one cylinder.
  • a piston pump is included into the hydraulic aggregate circuit, and is connected with the control assembly and the hydraulic medium tank via a non-return valve transmitting hydraulic medium in the direction away from the pump but not in the direction towards the pump on the one hand, and on the other hand, is connected in series to the hydraulic circuit together with a pressure accumulator and the previously mentioned non-return valve either via a switchover valve comprising a non-return valve transmitting hydraulic medium in the direction towards the pump but not in the opposite direction, or, in the case of exceeding the set-in-advance pressure due to automatic rerouting of the switchover valve, to the hydraulic circuit comprising the mentioned pump, the switchover valve, the control assembly and the mentioned non-return valve in the series connection.
  • the hydraulic aggregate excels in small dimensions, exceptionally low quantity of applied hydraulic medium and low hydraulic losses.
  • Patent SI 22877 discloses a solution of a hydraulic aggregate for a forestry winch with an integrated electromagnetic valve for controlling the brake cylinder and the clutch cylinder.
  • the hydraulic generator includes a pump for pumping the hydraulic media under pressure, an electromagnetic valve for controlling the brake cylinder and the clutch cylinder as well as a hydraulic assembly, which features a return valve, a safety valve and a choke features an electromagnetic valve integrated into the hydraulic assembly and the brake cylinder as well as the clutch cylinder by way of a hydraulic piping attached to the terminals of the hydraulic block leading from the integrated electromagnetic valve.
  • Patent SI 22937 discloses a hydraulic generator of the forestry winch with added hydraulic engine for rotating the driving device for unrolling the pulling rope from the winding drum, which features an added valve in front of the cylinder.
  • the valve In front of the hydraulic engine there is also an additional valve.
  • the valve is in the shutdown position open and requires for its locking an electrical signal from the direction of the cylinder, while the valve is closed in the shutdown position in the direction of the hydraulic engine and requires an electrical signal in order to open.
  • the triggered electrical signal for the flow direction of the hydraulic medium into the cylinder and the hydraulic engine switches the control valve and the valve on, while after a certain time lapse the valve is triggered.
  • the time lapse is larger than the required time for the cylinder to ensure the shutdown of the brake.
  • Slovene patent no. 23104 describes a hydraulic aggregate of a forestry winch with an added hydraulic motor for rotating a driving device for unwinding a traction rope from a winding drum, which comprises a pump for pumping a hydraulic medium under pressure, a gas accumulator and a reservoir, and a hydraulic block with a control valve for the control of a clutch cylinder and/or a brake and a hydraulic motor cylinder.
  • the hydraulic motor is linked with a pipe to the outflow connection of the brake cylinder, while the inflow connection of the brake cylinder with a pipe to the control valve. The flow of the hydraulic medium through the hydraulic motor is only possible, when the control valve is open for the flow into the cylinder and the cylinder is in the state with the brake unlocked.
  • the solution according to the invention differs from the above mentioned known solutions in that the invention is much more reliable from the perspective of security.
  • two valves activate simultaneously. If one of the valves is blocked after towing is stopped, this may lead to an accident as the winch continues to pull. Protection with two valves prevents such events, as it is highly unlikely that both valves would be blocked at the same time.
  • the essence of the hydraulic system with an additional protection of operation of the hydraulic circuit of the clutch and the drum brake in a forestry winch is in that it comprises a hydraulic accumulator, which stores enough energy for multiple releases of the brake or the clutch in case the hydraulic system malfunctions, a pump with a pressure relief valve, which is a safety valve at the same time.
  • the system mostly operates at a low pressure up to 20 bar, a time delay of activation of the brake cylinder can be set with an adjustable throttle.
  • a flow regulator ensures approximately constant rotation speed of the hydromotor regardless of the load on it.
  • the hydraulic system with additional protection of operation of the hydraulic circuit of the clutch and the drum brake in a forestry winch comprises an oil reservoir 1, a filter 2, a pump 3, a check valve 4, a pressure relief valve 5, a control valve 6, a check valve 7 with a throttle 8, a valve 11, a hydraulic accumulator 9, a check valve 12 with an adjustable throttle 13, a valve 19 with a throttle 18, a hydromotor 19, a cylinder 14 of the brake and a cylinder 15 of the clutch.
  • the entire hydraulic system is mechanically integrated into the housing of a forestry winch.
  • the pump 3 fills the accumulator 9 through the check valves 4 and 7 to a working pressure, which is set on the pressure relief valve 5.
  • a working pressure which is set on the pressure relief valve 5.
  • the pressure relief valve 5 opens and remains in this position until the pressure in the hydraulic accumulator 9 drops under a specified value, which is approximately 10 to 15 bar.
  • the oil freely runs to the flow regulator 16 and the control valve 6, when the valve 5 is open. Because the smaller resistance is on the side of the valve 6, the oil runs through it into the oil reservoir 1. Due to such execution of the hydraulic equipment the pump 3 works most of the time at a lower pressure, namely at a pressure up to 10 bar. If the user selects the function of rope unwinding, valves 6 (right) and 11 (right) are simultaneously switched.
  • the oil runs from the pump through the valve 6 to the flow regulator 16, the check valve 17 to the hydromotor 19, which drives the unwinding sheave, via which the rope from the winch drum is lead.
  • the oil from the hydraulic accumulator through the throttle 8, the valve 11 and the adjustable throttle 13 activates the brake cylinder 14 and consequently releases the drum brake, so that the drum starts to unwind due to the pulling force in the rope, caused by the hydromotor 19.
  • Pressure in the inlet line to the hydromotor 19 increases to 50 to 70 bar.
  • the driving speed of the tractor is higher than the peripheral speed of the rope on the unwinding sheave and the hydromotor 19 in this case works as a pump, so that the oil runs from the reservoir 1 through the motor 19, the throttle 18, the flow regulator 16, the valve 6 back to the reservoir 1.
  • the throttle 18 creates resistance, so that the sheave and the drum do not unwind too quickly due to dynamics. In case the drum rotates too quickly, the rope may unwind without control or the coils may loosen due to inertia of the drum.
  • the throttle 18 is intended to create resistance in the circuit of the drive of the hydromotor 19 in the case of winding the rope onto the drum.
  • the driven sheave in this case drives the hydromotor 19, which operates in the mode of a pump so that the oil runs form the reservoir 1 through the hydromotor 19 and through the throttle 18 and the regulator 16 back to the reservoir 1.
  • the larger the resistance of oil on the throttle 18 the larger the force of pretensioning between the sheave and the drum. This force is important for steady winding of the rope onto the drum in the form of a helix in layers, even when there is no load attached to the rope or if only rope is to be wound.
  • One of the essential safety elements of this scheme is that in an event that the user would like to release the rope in case of an emergency (for example when the load increases to such extent that the tractor with the winch is pulled towards an abyss), the drum may unwind to the end as the brake is always released. This characteristic cannot be found in any of the existing solutions.
  • the hydraulic scheme with additional protection of the clutch is shown in figure 2 .
  • the essential element is the 2/2 control valve 20, which is connected in parallel with the hydraulic cylinder 15 of the clutch.
  • the valves 11 and 20 have to be simultaneously switched so that the hydraulic cylinder 15 of the clutch is turned on.
  • the left part of the valve 11 and the right part of the valve 20 are simultaneously switched.
  • the oil from the accumulator runs towards the hydraulic cylinder 15 of the clutch, thereby activating it, while at the same time the oil cannot run through the right part of the valve 20.
  • the valves 11 and 20 are switched to their starting positions as shown in figure 2 . If one of the valves is blocked, the oil can freely run to the reservoir through the valve 11 or through the valve 20. In this way safety during work is not compromised as in older solutions, in which only one valve is used and if this valve is blocked, the winch pulls regardless of the winding function being terminated or not.
  • the key role in the system according to the invention has the pressure relief valve 5, which is simultaneously a relief and a safety valve. Because the system is designed so that it operates most of the time at a low pressure up to 20 bar, heating is lower and therefore the energy consumption is also lower.
  • the hydraulic accumulator 9 stores enough energy for multiple release of the brake or the clutch in case of malfunction of the hydraulic system or the pump.
  • a time delay for activation of the brake cylinder 14 can be set with the adjustable throttle 13.
  • the flow regulator 16 ensures approximately constant rotation speed of the hydromotor 19 regardless of the load on it.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Braking Arrangements (AREA)
EP16158966.8A 2015-03-13 2016-03-07 Forstseilwinde aufweisend ein hydraulisches system mit zusätzlichem schutz des betriebs der kupplung und trommelbremsenhydraulikkreislauf Active EP3067308B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI201631097T SI3067308T1 (sl) 2015-03-13 2016-03-07 Gozdarski vitel s hidravličnim sistemom z dodatnim varovanjem delovanja hidravličnega tokokroga sklopke in zavore bobna

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SI201500062A SI24950A (sl) 2015-03-13 2015-03-13 Hidravlični sistem z dodatnim varovanjem delovanja hidravličnega tokokroga sklopke in zavore bobna pri gozdarskem vitlu

Publications (2)

Publication Number Publication Date
EP3067308A1 true EP3067308A1 (de) 2016-09-14
EP3067308B1 EP3067308B1 (de) 2020-11-18

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EP16158966.8A Active EP3067308B1 (de) 2015-03-13 2016-03-07 Forstseilwinde aufweisend ein hydraulisches system mit zusätzlichem schutz des betriebs der kupplung und trommelbremsenhydraulikkreislauf

Country Status (2)

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EP (1) EP3067308B1 (de)
SI (2) SI24950A (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107161898A (zh) * 2017-07-06 2017-09-15 杭州华泰电液成套技术有限公司 一种张力绞车的液压控制系统及其方法
CN107575424A (zh) * 2017-08-25 2018-01-12 武汉船用机械有限责任公司 一种应急释放液压系统
CN107739001A (zh) * 2017-12-01 2018-02-27 江西工埠机械有限责任公司 一种新型安全应急液压制动器
CN109231051A (zh) * 2018-09-29 2019-01-18 武汉船用机械有限责任公司 一种高位绞车安全自锁和远程应急液压系统及其操作方法
CN112340630A (zh) * 2020-11-18 2021-02-09 中船华南船舶机械有限公司 一种应急液压系统
CN113998607A (zh) * 2021-11-09 2022-02-01 中船华南船舶机械有限公司 一种绞车控制的液压系统
US20220363522A1 (en) * 2021-05-12 2022-11-17 Bernward Welschof Method for the Operation of a Forestry Winch and Forestry Winch

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202005020694U1 (de) 2005-04-08 2006-06-22 A. Ritter u. Söhne, Maschinenfabrik und Landmaschinen GmbH & Co KG Seilauswurf- und Seileinlaufbremsvorrichtung
SI22392A (sl) 2006-09-27 2008-04-30 Tajfun Planina Proizvodnja Strojev, D.O.O. Hidravlicni agregat za oskrbo in krmiljenje manjsih hidravlicnih porabnikov, se zlasti zavore in sklopke pri gozdarskem vitlu
SI22877A2 (sl) 2008-09-29 2010-03-31 Uniforest@d@o@o Hidravlični agregat gozdarskega vitla z integriranim elektromagnetnim ventilom
SI22937A (sl) 2008-12-17 2010-06-30 Uniforest@d@o@o Hidravlični agregat gozdarskega vitla z dodanim hidravličnim motorjem
SI23104A (sl) 2009-07-10 2011-01-31 Uniforest D.O.O. Hidravlični agregat gozdarskega vitla z dodanim hidravličnim motorjem
EP2285723A1 (de) * 2008-06-03 2011-02-23 Tajfun Planina Proizvodnja Strojev, D.o.o. Hydraulische vorrichtung zur ansteuerung und führung eines länglichen zugelements, im besonderen einer riemenscheibe einer forstseilwinde

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202005020694U1 (de) 2005-04-08 2006-06-22 A. Ritter u. Söhne, Maschinenfabrik und Landmaschinen GmbH & Co KG Seilauswurf- und Seileinlaufbremsvorrichtung
SI22392A (sl) 2006-09-27 2008-04-30 Tajfun Planina Proizvodnja Strojev, D.O.O. Hidravlicni agregat za oskrbo in krmiljenje manjsih hidravlicnih porabnikov, se zlasti zavore in sklopke pri gozdarskem vitlu
EP2285723A1 (de) * 2008-06-03 2011-02-23 Tajfun Planina Proizvodnja Strojev, D.o.o. Hydraulische vorrichtung zur ansteuerung und führung eines länglichen zugelements, im besonderen einer riemenscheibe einer forstseilwinde
SI22877A2 (sl) 2008-09-29 2010-03-31 Uniforest@d@o@o Hidravlični agregat gozdarskega vitla z integriranim elektromagnetnim ventilom
SI22937A (sl) 2008-12-17 2010-06-30 Uniforest@d@o@o Hidravlični agregat gozdarskega vitla z dodanim hidravličnim motorjem
SI23104A (sl) 2009-07-10 2011-01-31 Uniforest D.O.O. Hidravlični agregat gozdarskega vitla z dodanim hidravličnim motorjem

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CN107161898A (zh) * 2017-07-06 2017-09-15 杭州华泰电液成套技术有限公司 一种张力绞车的液压控制系统及其方法
CN107161898B (zh) * 2017-07-06 2018-11-06 杭州流控机器制造有限公司 一种张力绞车的液压控制系统及其方法
CN107575424A (zh) * 2017-08-25 2018-01-12 武汉船用机械有限责任公司 一种应急释放液压系统
CN107575424B (zh) * 2017-08-25 2019-10-08 武汉船用机械有限责任公司 一种应急释放液压系统
CN107739001A (zh) * 2017-12-01 2018-02-27 江西工埠机械有限责任公司 一种新型安全应急液压制动器
CN107739001B (zh) * 2017-12-01 2024-04-09 江西工埠机械有限责任公司 一种新型安全应急液压制动器
CN109231051B (zh) * 2018-09-29 2020-06-05 武汉船用机械有限责任公司 一种高位绞车安全自锁和远程应急液压系统及其操作方法
CN109231051A (zh) * 2018-09-29 2019-01-18 武汉船用机械有限责任公司 一种高位绞车安全自锁和远程应急液压系统及其操作方法
CN112340630A (zh) * 2020-11-18 2021-02-09 中船华南船舶机械有限公司 一种应急液压系统
CN112340630B (zh) * 2020-11-18 2021-12-17 中船华南船舶机械有限公司 一种应急液压系统
US20220363522A1 (en) * 2021-05-12 2022-11-17 Bernward Welschof Method for the Operation of a Forestry Winch and Forestry Winch
US11905147B2 (en) * 2021-05-12 2024-02-20 Bernward Welschof Method for the operation of a forestry winch and forestry winch
CN113998607A (zh) * 2021-11-09 2022-02-01 中船华南船舶机械有限公司 一种绞车控制的液压系统

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