EP3093264A1 - Mechanisch-hydraulisches system mit druckregler zur aufrechterhaltung einer konstanten zugkraftleistung einer winde - Google Patents

Mechanisch-hydraulisches system mit druckregler zur aufrechterhaltung einer konstanten zugkraftleistung einer winde Download PDF

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Publication number
EP3093264A1
EP3093264A1 EP15203152.2A EP15203152A EP3093264A1 EP 3093264 A1 EP3093264 A1 EP 3093264A1 EP 15203152 A EP15203152 A EP 15203152A EP 3093264 A1 EP3093264 A1 EP 3093264A1
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EP
European Patent Office
Prior art keywords
drum
pressure regulator
winch
forks
tractive force
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.)
Granted
Application number
EP15203152.2A
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English (en)
French (fr)
Other versions
EP3093264B1 (de
Inventor
Franc Pisek
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.)
Pisek Vitli Krpan doo
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Pisek Vitli Krpan doo
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Filing date
Publication date
Application filed by Pisek Vitli Krpan doo filed Critical Pisek Vitli Krpan doo
Priority to RS20201069A priority Critical patent/RS60799B1/sr
Priority to SI201531343T priority patent/SI3093264T1/sl
Priority to PL15203152T priority patent/PL3093264T3/pl
Publication of EP3093264A1 publication Critical patent/EP3093264A1/de
Application granted granted Critical
Publication of EP3093264B1 publication Critical patent/EP3093264B1/de
Priority to HRP20201427TT priority patent/HRP20201427T1/hr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B66D1/28—Other constructional details
    • B66D1/40—Control devices
    • B66D1/48—Control devices automatic
    • B66D1/50—Control devices automatic for maintaining predetermined rope, cable, or chain tension, e.g. in ropes or cables for towing craft, in chains for anchors; Warping or mooring winch-cable tension control
    • 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

Definitions

  • the present 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 pressure energy particularly important in devices with uneven consumption. At the same time, the present invention also belongs to the field of pressure regulators for maintaining constant tractive force of forest winches.
  • the technical problem which is solved by the present invention, is construction of such hydraulic system for steering and controlling a winding drum of a winch, which will together with the mechanic assembly at the winding drum enable keeping almost constant tractive force of the winch.
  • the diameter of the drum changes in relation to the number of layers of wound wire rope, which consequently affects the tractive force of the winch.
  • the task of the present invention is constructional arrangement of individual functional winch elements together with the elements of the hydraulic system, which would enable maintenance of constant tractive force of the winch even in the case when the towing rope is entirely wound to the drum or in the case when the towing rope is almost entirely unwound.
  • the aim of the invention is a constructional solution of mechanic parts of the drum together with accessory parts, which will allow influence on hydraulic parameters.
  • Usual forest winches have the highest tractive force when the drum is empty or when the drum has one layer of rope wound to it.
  • Lamellar clutch/coupling are compressed with a constant force, therefore a constant momentum is always transferred from the drive shaft to the drum of the winch.
  • the tractive force decreases, as the torque is equal to the product of force and distance of the force line from the axis.
  • the winch described in patent document EP2565144 comprises a drive shaft, a drum for winding a rope, a coupling of the drum for transfer of rotational movement of the drive shaft to the wire drum, a break of the drum for braking the rope drum and an outlet device of the rope with at least one sheave.
  • the sheave can be propelled for unwinding the rope and with transmission, which has a coupling of the rope outlet, wherein the sheave is connected with the drive shaft.
  • the invention is characterized in that the coupling of the rope outlet is formed with a coupling, which is activated hydraulically.
  • This solution differs from the present invention, in which hydraulically steered mechanism is included in assuring mechanical deviation of handles with the aim of maintaining almost constant tractive force of the winch.
  • Slovene patent no. 24108 discloses a solution of a forest winch, in which winding of a rope is performed in a controlled manner, which means that each disposable windings of said cable on the surface of a winding drum should be arranged side by side relatively to each other and without any transpositioning or overlapping, while at the same time each overloading of said towing cable and other components of a driving assembly due to towing of too heavy load should be excluded.
  • the winch is furnished-with-a-directing assembly, which is arranged between an upper pulley block and said winding drum and is freely rotatable or least pivotable at certain angle around the vertical geometric axis, wherein said winch moreover includes a dynamometer suitable for measuring of tensioning force within said towing cable, so that also the winding drum can be controlled depending on each measured loading of the towing cable.
  • the essence of the mechanic-hydraulic system with a pressure regulator for maintaining constant tractive force of a winch is that at each new layer of a towing rope on a winch drum a pushing cylinder is pushed away, wherein the cylinder rotates the axis of forks, which carry the pushing cylinder. Rotation of the forks' axis causes movement of a pole, which pushes a piston of a pressure regulator for one step, consequently leading to an increase in oil pressure, which causes an increase of the cylinder piston pressure on couplings, resulting in an increase of the drum momentum.
  • the invention is based on a mathematical algorithm defined by distances »e«, »f « and »g «, which causes movement of the piston of the pressure regulator for each movement of the pushing cylinder or fork axis, respectively, due to a new layer of the towing rope on the drum.
  • Increasing or decreasing the oil pressure in the hydraulic system in accordance with changes in distances »e«, »f « and »g « results in maintenance of an almost constant tractive force of the winch.
  • a pump 3 fills a hydraulic accumulator 9 via check valves 4 and 7 to a working pressure, which is set on a pressure relief valve 5.
  • the pressure relief valve 5 opens and remains in an open position until the pressure in the hydraulic accumulator 9 drops for a specified value, which is approximately 10 to 15 bar.
  • Oil freely flows to a flow regulator 16 and a control valve 6, when the valve 5 is open. The smaller resistance is on the side of the valve 6, therefore oil flows through the valve 6 into an oil reservoir 1. Due to this technical realization of the hydraulic equipment, the pump 3 operates most of the time at a lower pressure, namely at a pressure up to 10 bar.
  • valve 6 (right) and a valve 11 (right) are simultaneously switched.
  • Oil runs from the pump through the valve 6 to the flow regulator 16, a check valve 17 to a hydraulic motor 19, which drives the unwinding sheave, with which a rope 31 is led from a drum 30 of the winch.
  • oil from the hydraulic accumulator 9 via a damper 8, a valve 11 and an adjustable damper 33 activates a cylinder of a break 14 and thereby releases the break of the drum, so that the rope on the drum 30 starts to unwind due the tractive force in the rope 31, which is caused by the hydraulic motor 19.
  • Pressure in the inlet line to the hydraulic motor 19 rises up to 50 to 70 bar.
  • the hydraulic scheme also includes the pressure regulator 21 and a check valve 22, which is on one side connected with the reservoir 1 hub, the valve 6 and the valve 20, and on the other side with the pressure regulator 21.
  • the first layer of rope on the drum has a radius »rn« and the last anticipated layer of rope on the drum has a radius »rz «.
  • the working pressure is »po «.
  • the pressure »p« in the pressure regulator 21 is set by transposing levers or lever arms, respectively, thus by selecting lever arms »e« and »g« and length »f « of the pole 36.
  • the mechanic-hydraulic system has a pushing cylinder 33 mounted to forks 34, which oscillate around a lower axis 34a, to which a spring 35 is mounted with an accessory 35a on one side and a fastening element 36a for a pole 36 is mounted on the other side.
  • Distance »g» is between the centreline of the axis 34a, where the bottom part of the accessory 35a is mounted, and the centreline of the upper part of the accessory 35a, where the spring 35 is mounted.
  • a fastening element 36a with a groove 36a' is mounted, into the said groove 36a' the second part of the pole 36 is installed, which is preferably a threaded rod.
  • the second part of the pole 36 is rotatably mounted into a holder 36b, which is via a part 36b' in contact with the piston of the regulation valve 21.
  • Distance »e« is between the centreline of the axis 34a and the area in the groove 36a', where the first part of the pole 36 is fixed.
  • Distance »f « is between the first part of the pole 36 and the centreline of the mounting of the second part of the pole 36 in the holder 36b.
  • Pre-strained spring 35 pulls the forks 34 on the lever arm »g « and thereby pushes the pushing cylinder 33 on the drum 30 with the wound rope 31.
  • the pushing cylinder 33 which is mounted on the forks 34, is therefore moving away from the axis of the drum 30, as the forks 34 rotate around the axis 34a.
  • Rotation of forks 34 causes a horizontal shift of the pole 36 along the groove 36a' of the fastening element 36a.
  • the size of the horizontal shift of the part 36b' of the holder 36b is adjustable with distances »f « and »e «.
  • the pole 36 pushes the piston of the pressure regulator 21 with the part 36b' of the holder 36b, which causes an increase in oil pressure. If the pole 36 is moved away, the piston of the pressure regulator 21 is released due to the shift of the part 36b', resulting in decreased oil pressure.
  • the piston of the check valve 22 can be pushed for a defined value with the pole 36.
  • the distance of the movement of the part 36b' of the holder 36b towards the regulating valve 21 is limited.
  • the starting position of the part 36b' is fully retracted.
  • the pushing cylinder 33 on the drum 30 pushes onto the first layer of the rope.
  • the pressure of oil, which is let by the pressure regulator 21 to the coupling cylinder, is »pn « and its lowest value is around 90 bar.
  • the relationship between the shift of the pushing cylinder 33 from the drum 30 axis and the shift of part 36b' of the holder 36b towards the regulation valve 21 is approximately linear.
  • Figure 4 shows the winch drum and radius »rn« as well as diameter »rz « and on the vertical axis force F, wherein areas A, B, C, D depend on selected sizes of force Fn, so that the force F is constant. It is visible from the figure 4 that it is possible to select the size of force Fn by altering distances »e«, »g« and »f«, wherein the force F changes in an approximately linear manner. Setting of distances »e«, »g« and »f « is enabled by altering the mounting position of the spring 35 and both ends of the pole 36.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Actuator (AREA)
  • Auxiliary Drives, Propulsion Controls, And Safety Devices (AREA)
  • Tension Adjustment In Filamentary Materials (AREA)
EP15203152.2A 2015-05-09 2015-12-30 Mechanisch-hydraulisches system mit druckregler zur aufrechterhaltung einer konstanten zugkraftleistung einer winde Active EP3093264B1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
RS20201069A RS60799B1 (sr) 2015-05-09 2015-12-30 Mehaničko-hidraulični sistem sa regulatorom pritiska za održavanje konstantne snage vučne sile vitla
SI201531343T SI3093264T1 (sl) 2015-05-09 2015-12-30 Mehansko-hidravlični sistem z regulatorjem tlaka za ohranjanje konstantne moči vlečne sile vitla
PL15203152T PL3093264T3 (pl) 2015-05-09 2015-12-30 Układ mechaniczno-hydrauliczny z regulatorem ciśnienia do utrzymania stałej siły pociągowej wciągarki
HRP20201427TT HRP20201427T1 (hr) 2015-05-09 2020-09-07 Mehaničko-hidraulički sustav s tlačnim regulatorom za održavanje stalne vučne sile radne snage vitla

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SI201500123A SI24995A (sl) 2015-05-09 2015-05-09 Mehansko-hidravlični sistem z regulatorjem tlaka za ohranjanje konstantne moči vlečne sile vitla

Publications (2)

Publication Number Publication Date
EP3093264A1 true EP3093264A1 (de) 2016-11-16
EP3093264B1 EP3093264B1 (de) 2020-06-10

Family

ID=55177714

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15203152.2A Active EP3093264B1 (de) 2015-05-09 2015-12-30 Mechanisch-hydraulisches system mit druckregler zur aufrechterhaltung einer konstanten zugkraftleistung einer winde

Country Status (6)

Country Link
EP (1) EP3093264B1 (de)
HR (1) HRP20201427T1 (de)
HU (1) HUE050951T2 (de)
PL (1) PL3093264T3 (de)
RS (1) RS60799B1 (de)
SI (2) SI24995A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109823483A (zh) * 2019-03-25 2019-05-31 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） 一种无动力水下软管自动收纳装置
CN109969964A (zh) * 2019-02-28 2019-07-05 杭州天铭科技股份有限公司 导绳器

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SI26004A (sl) 2020-05-22 2021-11-30 PIŠEK - VITLI KRPAN, d.o.o. Opozorilna naprava za javljanje omejene količine vlečne vrvi na bobnu vitla in gozdarski vitel z omenjeno napravo

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1244661A (en) * 1967-11-20 1971-09-02 Helsingborgs Varfs Aktiebolag Improvements in or relating to ship mooring and warping apparatus
DE2922421A1 (de) * 1979-06-01 1980-12-11 Bbc Brown Boveri & Cie Winde mit einer trommel
JPS5878999A (ja) * 1981-10-30 1983-05-12 新明和工業株式会社 クレ−ン車のウインチ駆動制御装置
DE10034336A1 (de) * 2000-07-14 2002-01-31 Welte Fahrzeugbau Gmbh Seilwinde für die Holzbringung im Forst
EP2565144A1 (de) 2011-08-31 2013-03-06 Pfanzelt Maschinenbau GmbH Seilwinde
SI24108A (sl) 2012-05-31 2013-12-31 Tajfun Planina Proizvodnja Strojev, D.O.O. Gozdarski vitel s kontroliranim navijanjem vlečne vrvi in varovanjem le-te proti preobremenitvi

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1244661A (en) * 1967-11-20 1971-09-02 Helsingborgs Varfs Aktiebolag Improvements in or relating to ship mooring and warping apparatus
DE2922421A1 (de) * 1979-06-01 1980-12-11 Bbc Brown Boveri & Cie Winde mit einer trommel
JPS5878999A (ja) * 1981-10-30 1983-05-12 新明和工業株式会社 クレ−ン車のウインチ駆動制御装置
DE10034336A1 (de) * 2000-07-14 2002-01-31 Welte Fahrzeugbau Gmbh Seilwinde für die Holzbringung im Forst
EP2565144A1 (de) 2011-08-31 2013-03-06 Pfanzelt Maschinenbau GmbH Seilwinde
SI24108A (sl) 2012-05-31 2013-12-31 Tajfun Planina Proizvodnja Strojev, D.O.O. Gozdarski vitel s kontroliranim navijanjem vlečne vrvi in varovanjem le-te proti preobremenitvi

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109969964A (zh) * 2019-02-28 2019-07-05 杭州天铭科技股份有限公司 导绳器
CN109969964B (zh) * 2019-02-28 2024-03-29 杭州天铭科技股份有限公司 导绳器
CN109823483A (zh) * 2019-03-25 2019-05-31 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） 一种无动力水下软管自动收纳装置

Also Published As

Publication number Publication date
HUE050951T2 (hu) 2021-01-28
PL3093264T3 (pl) 2020-12-14
RS60799B1 (sr) 2020-10-30
SI3093264T1 (sl) 2020-10-30
EP3093264B1 (de) 2020-06-10
HRP20201427T1 (hr) 2021-01-08
SI24995A (sl) 2016-11-30

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